i have a 78 regal fastback. i just swapped out my th350 for the 700r4...it just been built and installed, the first time i drove it...it shifted well...1st...2nd...3rd...and 4th. my line sprung a pin hole leak and put me like a lil over a quart low. i filled it up and now it wont come out of 1st!?! if the t.v cable is still hooked up...what can it be???