i just got done installing a brett 23x/24x 110 cam with matched/recommended springs-guide plates and 3/8 rods in my 383 and heres the tough one........i'm trying to adjust all the rockers 1 cylinder at a time and cylinder 6 is really funky...i'm using new crane liftrers and 1.6 gold rockers and the set screw is down way to far on #6 intake...#5 intake and exhaust is alil high and low but not to far off but 6 is really far in....anyone have any ideas on what could cause this

 

collapsed lifter??? shorter pushrod??? that's about it.

 

pushrods are all the same length....and a collapsed lifter would do the exact opposite and my set screw would be higher up instead of lower like it is