hey ive got 2 trannys that were like that. and 1 was built lol
i'd consider a different clutch. i was using a 6puck clutch and destroyed 3rd gear on a built 600hp ready tranny. making 500hp
i switched clutches and never had a problem. the 6pucks and puck style clutches are nice, they grip hard and yank but they're BRUTAL as hell to your gears and driveline