Thanks Sparkydog, i know were you are coming from.
Some type of reference point would be really helpful for DIY'ers like me.
let me start for example
Level of complexity - 10 ( 1-10 most complex)
range of tools needed - 9 (1-10 complete range of general and specialist tools)
Skill level required - 9 highly skilled, sharp eye and good trouble shooter (1-10 high level of skill)
Time required in total - 100hrs 5hrs/day x 3weeks with all things ready to go.(hours)
Success rate of backyard DIY 4L60/e rebuilds - 50 % (%)
Main problems of rebuild failures - wrong parts, poorly installed, seals damaged on installation, wrong torque settings, wrong clearances (parts, kits, errors etc)
Calling on those with experience ( good and bad ) to help us DIY'ers out here, it would be a really useful thread if we could get a clear insight into the tranny rebuild world.