here is just a few thoughts.
with a lockup even if you pull in the clutch i bet its not releasing it may feel like it a tad but its probably not. your probably just stretching the cable and twisting the top tab ont he release lever down on the case.... a non locked clutch with HD springs and good plates dosent have this issue.. you pull in the clutch at high rpm and it releases just like it should.. unless yoru drag racing you probably dont need a lockup..
the trans i do works ok with a locker but again it needs to be unloaded to shift right. the HD clutch with all 8 hd springs should hold around 90+hp easily. in the past with around 75-90 hp with a lockup and not as much weight on the fingers my trans will shift with a blip of the throttle.. OR a blip of the clutch..
i dont know how others do their trans mods like this so i cannot comment on some that have issues with theirs..
that 10 serval sounds pretty good in the video!
i have played with the 3 stiff and 3 stock springs i felt it always sucked ass. the clutch felt weird and when it got a lil heat in it it would slip on initial launch. so i threw all the OEM stock springs i had in the trash. ALL hd springs ( toomey, barnett, driveline raptor etc) OR 3 15% + and 3 HD springs if your pimp hand is a lil on the puss side.