Help with Kz750 charging issues

It all seems wired correctly. 
I'm just really curious about voltage drops along all the reg/rec lines. 
When you have a chance, do the tests and report back. 

I haven’t done to test yet. But I did rewire the three yellow wires. I did to to make sure nothing was amiss with the bullet connectors. And for some reason I had two sets of them along the yellow wires. Didn’t make sense. After rewiring it it idles (my idle is pretty low normally). Around 13v. So there is improvements. And I was able to rev it a bit up to 13.5v or so. But I didn’t rev it high enough because I don’t want my neighbors to hate me. So like I said. Improvement. But not right. Any more ideas? Should I go ahead and do that test?

Testing would help.
You could keep changing parts and get lucky, but that gets expensive with time and money.

I’ll test it hopefully sometime this weekend and try my best to document the results.