700r4 shifting problem
alright here's my situation, i recenty bought a rebuilt 700r4 transmission. it has all the latest updates installed, servo etc. it also has a stage 2 shift kit. for the most part it works great, except for a small problem; when i am speeding up at part throttle in 2nd gear it tends to pop out of gear and quickly go back into gear and then shift to 3rd. i've talked to the people i bought it from and the say its the TV cable. its really sensitive and you have to play around with it. another guy at a tranny shop said whats happening is what they call a "cut loose". they say you have to shim an actuator valve. if anyone can shed some light on the situation, any info would be awesome!