Clutch fork won't clip back in.

Ok spoke to Wayne at brewers, super helpful guy.
He was saying that the z bar looks like it's slightly higher on one side and not parrallel Like it should be.
He said that since all this setup worked in my 383 and I have all the correct bits which we went through over the phone and email pics, he said the 440 must be sitting slightly higher on the drivers side because that's the mount you change when putting a 440 in an a body or the new gearbox mount is a bit taller than the original one.
Changing either the drivers side mount height or gearbox mount height should give me the clearance between the starter and the z bar. I will check this out tomorrow and post my findings.
We also discussed my clutch and pressure plate clearance and I'll wait till I get the overcentre spring installed and do a retest. He seemed to think that once that's in and the z bar is parrallel, all will work fine.