No fuel out of carbs

As Zed mentioned, not significant on those Choke bellow seals but the hole in venturi is going to vacuum from the easiest source. So if that skinny brass protruding tube is plugged then it's going to just pull air from around the clearance of choke plunger and it's bore. Make sure the "jets" in each bowl are clear! Bowl IS part of the choke system. Was farting around looking for a source for these and ended up on Z-Powers site and somehow they had gotten this photo I added from a previous discussion of similar a while back. They have 4 photos posted and one is  mine haha.   

1: maybe i missed this, but how do we know there is no fuel getting to the cylinders? I think in black and white terms, so none means none.
2: Or is this a variant of "i have spark and compression, but it wont start from the fuel in the carbs"?
3: how many turns out are the fuel screws on the top of the carbs?
4: if you start it with starting fluid of choice, it wont stay running on the carbs?
5: are you giving any throttle input when trying to start it from the carbs?
6: how did you choose the starting point for the idle adjustment screw?
7: are you using the choke at all, when trying to start it?

The passageways are all dry after attempting a few starts so I'm sure it's not pulling any fuel
I've tried them closed, 2 turns, halfway, and fully open, no difference
The second brake clean runs out it stops hitting
Throttle kills it immediately
Zero on the idle screw, if the butterfly is open at all it won't do anything
It will only hit when the choke is on

Putting my hand over it when the choke is on I can feel it drawing air through the bowl vent at the back side, I can't feel anything over the air jets. Possibility that the bowl is overfilled on all 4 maybe? It would seem off to me that they're all equally wrong as visually they all appear the same when I move the filler needle but I'm really at a loss here otherwise

Adding onto this: I went and teflon taped all the bowl filler tubes between the carbs, no difference necessarily but if I hold something over the bowl vents at the rear I can get hits

Further updates, I do appear to have some sort of issue with either bowl levels or bowl venting. I got the bike to turn over and run only when the choke is pulled after opening each bowl and filling it with a metered amount of fuel. Attempting to run it on the pilot only will cause it to die and attempting to add any throttle will kill it though, full choke it seems to want to idle to infinity so I have to move the plunger back and forth to get it to a decent spot

Have you set the float heights with a clear tube ?

If you are getting a strong stream of fuel from the petcock but nothing in the bowl (s) you realize there is a domed filter on each of the 4 float needle seats, right? Crap can get impacted behind those filters. Remove all floats/pins and needles. Feed fuel thru your singular fuel inlet and watch for fuel to flow out all the float needle seats. If you remove the float seats, i would, orings are 1.5CSmm X 7mm.

Was going to do float heights today but gave the bike another chance before I did that and filling from an outside source like normal didn't change anything, I can still start and idle the bike on choke but turning choke off kills the bike and throttle kills the bike

For background on the bike it only has 15k miles and wasn't run for what appears to be 10-15 years, it would seem really odd to me that anything inside the bike was messed with, everything besides the airpods (Box is back on currently) seems to be untouched stock

If it only runs on choke, clearly your carb jets/internal passages are blocked. Squirting a bit of carb cleaner around does not  constitute cleaning the carbs. 

Issue appears to be solved, the boots the PO provided seem to be interfering with the pilot intake jet or it's not sealing where I can't see. Trying to put the carb on again after spending some time with a wire brush cleaning around the frame (had to take a break from the carb) I noticed that they felt folded over when I reached inside the box to get them on again. Pulling them back and using duct tape to seal at the box side the bike fired up and runs great on throttle now, guessing they're not OEM and I'll be buying some if I can't get them to fit right

Hopefully future issues are much easier 

Next is going to be chain, sprockets, and tires