Ok, so I have a stock 03 4r70w in my 98gt. It has a huge trans cooler and a manual valve body. Problem is, it just dosent shift that well into 3rd gear. It will chirp the tires into 2nd, but 3rd feels like . I have taken the 3rd gear accumulator spring out and it has gotten a little more firm, but I just want it to shift a little harder like 2nd gear does (because of the nitrous!). Anyone know what im talking about?