AW-4 transmission problem

I have a 99 with 200k miles. For the past 25k when going about 35-40mph and i let off the gas, like your slowing down behind a car, and start to hit the gas again it revs up like its in neutral. When i slow down somemore and git back on the gas it is ok again. If i am carefull i can drive it with out this happening. Otherwise it drives good the trans works great in all other conditions. No sliping at all pulls hard, shifts good, and the fluid is full and looks good. I have only used dex3/merc. Am going to pull pan and check silnoids.

I have the same problem except mine does it when its cold. When its warmed up its fine. I was told it is the seals but not sure. Anyone with an answer?:read: