ya i'm rebuilding my tranny, mods that have been done already , gm conversion pressure governor, transgo diesel shift kit , manual lock up switch,ok heres the story , truck is modified some ,cold air intake /w manifold, 100hp injectors , 4" turbo back, lift pump, edge 5x5 comp tuner ,,started having trouble with tranny , put shift kit in , found 3-4 spring in vavle bode was broke 2 coils from one end ,shift kit supplied springs to replace that ,t/c was just about done by then, pulled tranny from truck, started tear down , went through valve body , **** from t/c got some valves stuck , looks like to me , kept instructions from shift kit , ******* mouse got in to tool box ate them,i got one , {smallest spring] left, don't know where it came from need instructions its one that came with kit , my book doesn't show but original stuff , should have taken better pics during disassembly I guesse , just so any one having problems with tranny, like lock up slip or shudder , and it works fine some times , but not others, may be broke 3-4 spring, in vavle body , I have to overhaul mine cause its out of truck and ill be damned if im putting it back without mayjor upgrades , all the clutch packs are good , but its getting the treatment anyway , truck has 120000 miles that's it ,throwing piece of **** t/c away , clean all the crap out install power packs and that's all folks , but a little stuck , that ******* little spring is pissing me off