Don't know if I should reply here or to the new thread location....but
As an engineer/machinist, this particular issue looks like it should be addressed by the factory. It shows an unanticipated wear problem, which will obviously worsen with use. This may be acceptable wear on a low end gun 300- 500$ range, but should not be tolerated on a 2K gun. When I eventually receive my Impact, I can see a few easy (for me) fixes: Turn down the eccentric OD, send it out for hard anodizing, then press on a stainless steel sleeve, that being my first thought. if the end of the spring follower is not flat, make it so, or even increase it's surface area as much as practical. An easier fix would be to just order/install a new knob every year or so, depending on usage. There is really not much functionality lost, other than the gradual change in spring tension as the pits get deeper. You don't see this problem on other guns because this is a "new" way to adjust the hammer spring tension for production guns. As I mentioned in another post; if the Impact stays popular, it looks like a good business opportunity for someone who is handy with machine work, to specialize in repairs and upgrades for this gun......Not me; I'm too old and burned out.
Warranty claim or full refund ? 
