Newbie here...can't get clutch to disengage...

Have you looked at relocating the pivot point on the frame rail forward a bit to gain clearance with the header.

Wouldn't that throw the Z-bar out of alignment?
I am going to need to pull the Z-bar, again, to shorten the lower arm back to the stock length. It just barely cleared the headers then.

Can somebody please measure how much total clutch fork movement they have?

Thanks.