One way to test if your detents are working is to take your barrel off......then fire paint slowly without a barrel into the ground. If you see balls dropping out, part way or all the way, between trigger pulls then there's a problem.
ETEK 3LT, with 14" Ti boomstick and cure 3 + bolt F/S
Vanguard creed eyes, membrane, bolt pin, detents F/s[/color]
Old school angel poppets/cup seals, spring detents(not sure which models) F/S