Has anyone done the cab mount shufffle ? Gonna pull my hair out !!!

[Green Machine]

Ok - here we go- started with bare cab on frame, put in new stock cab mounts, no extra shims, squared and measured with frame. Put on doors and got adjusted nice. put on rad support, hung fenders, door - fender gap too large at top, ok no problem, removed stock 68 type washer/rubber rad mouts and replaced with 1970 type, went front 3/8 to 3/4 tall on front. That fixed fender problem. Aligned whole front end, adjusted hood etc. Put on box, Had to shim rear of cab for alignment, use jack again etc. That threw of fender gap so shim front mounts. check front bumber for aligment. Now with thicker rad mounts, grill is to high, removed rad mountsand put in originals, fender gap screwed up again, removed front cab shims , back on flat again, now door don't fit right, front cab mounts need to be lower, but can't go lower, rear of cab lines up well with bow and bumper fits grill but the midlle is all fu@@ked up now. at front fenders measure same distance from frame but fan does not sit in middle of shroud, This is just a summary, Ive had the mounts apart so many times that the locking nuts are wore out Also hood seems to have more curve (hump) that the fenders do ???

AAAAAAARRRRRRRRRRGGGGGGGGGGGHHHHHHHHHHH