Yes it could be more of a converter issue than anything. The converter I have is fairly tight and cold fluid might make it tighter. So at light throttle with cold fluid the converter is probably close to locked up. Once things warm up and if I'm in the throttle then the converter is slipping and the shift is much softer. I'll call TA one of these days and talk it over with him. I'm sure he'll be able to fill me in on the details. He will also probably tell me that I'm using the wrong valve body for my application which wouldn't surprise me. Part of the drill when you put a bunch of race car parts on the street.