KS ,
I've had this happen with other actions in MPAs ,mccrees ,rock solids . The only chassis I know of is a KRG they have slotted receiver holes to allow for these issues . You should always check any part fitment you hang on a firearm since there is not really a standard for custom parts.
I have used shims to solve this issue behind recoil lugs and rear tang area due to deflection . The correct way to remedy this is to bed the chassis for a stress free mating surface .
The guys at Curtis Customs are doing a hell of a job With this venture giving us shooters another opinion to choose from with a great price point . I'm a convert to the Curtis due to there Customer service and awareness ,with the willingness to improve and refine there product .
-GW-
Yes, there is a standard. It's called a Rem 700 footprint. This issue wasn't caused by a stack up of tolerances, or incompatibility of parts, it was caused by an additional .050 worth of extended tenon between the actions face, and the screw holes. (The trigger pins are .050 farther rearward also.)
Why would I want to take a chassis that was designed to have any "700" dropped directly into it, and bed it so that it is bastardized to only 1 receiver in order to make a "correct" repair? Almost everybody I know with chassis or mini chassis switch barreled actions back and forth on a regular basis, plus the resale value of that chassis just fell to almost nothing.
I do agree, Joel corrected the bolt issue we had very quickly, and the action looks and feels nice, at a price that is very competitive. I almost bought 1 for myself the week previous, and even after the 3hrs of aggregation in taking other rifles apart to measure and compare shit to find the issue, I'm still considering one of the corrected revisions.