Kute, nice to see you around.
Kimber's often had some feeding issues early on... the feedramps on both the 8400 and 84's were too steep by 10*.
The 8400's ramp was changed-over around 2006 and also got a ships bow incorporated in it... a decided help with CRF rifles.
The 84's were finally changed around 2007/2008. Of course the new 84L's were designed with the shallower feedramp/ships-bow from the get-go.
I've found the steeper feedramp was more problematic with the 8400/WSM's than the 84's. But the shallower feedramp helped both.
As to QC... can't really know. All 11 MT's I've had would shoot something well... and some would shoot a LOT of things well.
I have noticed a marked improvement on how well the MT's recoil pads are ground.
