i just recently had my ls7 clutch installed. i have about 80 miles on the setup right now. also got a new 01-02 updated gm slave, and had a RAM adjustable master installed about 4,000miles ago.
i just noticed today that when i step on the clutch and throw it into first (foot not on brake), the car moves just a little bit/jerks like 1-2 mm. its only noticeable when i focus on a tiny pebble with the door open. the car only moves when the shifter is moving. once the shifter is all the way in first with the clutch down, theres no movement. even if i rev the engine in 1st gear/clutch down, there is no movement. the car only moves when the synchros are engaging i guess.
i currently have my RAM master adjusted to the shortest pedal setting, but nothing changes if i adjust it to the tallest pedal setting.
car drives and shifts perfectly fine; i doubt there is any air in the system.