If you use 4 different rod/piston assemblies in the four corners, the rods should have been resized and set to the same length. Without that having been done variances in deck height due to rod lenght can occur.
If rods have not been resized and length adjusted, I have been advised to use the same rod/piston assembly and move it from one corner to another. Then deck clearance variability is solely due to the deck. If you do that even after zero decking you will likely find some variance. However zero decking without assurance of equal lengths can be a problem.
Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.
