About a year ago the transmission began having trouble locking/unlocking the converter. It would frequently lock/unlock between 50-60mph. Also when applying gas to accelerate the RPMs would go up, but the car would not accelerate. Transmission had been leaking from pan, it was about 1/2 quart low. After adding 1/2 qt. shifted perfectly, when given gas it would go and no more converter lock/unlock hunting.

Tranny was still leaking so I knew I was on borrowed time. It began acting up again 2 weeks ago. This time the converter lock/unlock wasn't as noticable, but the slippage was real bad (~2k RPM increase before car would begin to accelerate).

Thius morning I dropped pan, fluid did smell a tad burned. It was a greyish/red color (more grey than red). No particles in the fluid, but it did have a tad of a burnt smell to it.

I went ahead and put new gasket and filter in, then went thorugh fill procedure (turn on car, shift thorugh each gear waiting ~3 seconds in each gear, then back to park, remove drain plug and add until fluid dribbles out, then allowed fluid ot dribbble out untilit was down to a drip pace). I then took car for drive...things have improved notably, but still some slippage (in 3rd and 4th when attempting to accelerate from a cruise RPMs will go up 500-800 before car accelerates).

Should I have gone through the fill procedure a second/third time allowing transmission to cool? IS it possible it still needs another 1/4-1/2 quarter? Any other ideas, or am I screwed? I probably should have just dropped the pan and replaced the gasket etc. first time around, but other things in life had kept me too busy.