Too much valve clearance

Recently I swapped my KZ1100's motor out, it lost compression on 2 cylinders prob the rings but that's another rebuild.
My problem is, I am checking the valve clearances in prep for final assembly and 2 of my valves have much bigger than they should gap between the shim and cam.
One of then is probably within shim range with .4 clearance with a 2.8mm shim, so I could get there with a 3.15 shim.
The other and my main concern will easily allow my .75 feeler to pass with little resistance, and with a 2.9mm shim already there will not be able to get to spec with the available shim range.
What would cause such a large gap? A bent valve maybe?
Looking for opinions and advice on how to proceed, and was hoping to avoid taking the head off, but I may need to scavenge from the other motor, maybe just do a head swap.

Bent valve will not fully seat and cause excessive clearance. Do a leak-down test at TDC and see if air blows by that valve.

False alarm. apparently the PO sucked a couple of rags thru the intake. The rags were stuck in the valves.

HOLY CRAP!!
Somrtimes I think folks like that should not be allowed to waste oxygen, but then I think about how smart they make me look............

Not much better news than that. How the hell did rags get in there?

Probable had the carbs off at some point and stuffed the intakes with rags, I have done it myself but never forgotten to remove them.