I cant really help with the problem, but I can give some advice on the transmission if you go to replace it.
I bought a "Raptor" from the place you have listed (Transmissioncenter.net). It was suppose to be a heavyduty kickass trans, but it turned out to be a real piece of junk. Shipping is $250.. each way. So I didnt have much choice but to just eat shipping and send it back to them. This was after an hour on the phone with the raptor "specialist".
They returned a different raptor, missing the extra deep pan and tone ring I had paid for. This transmission was in worse condition than the first, and two local shops I talked to said these transmissions were in need of internal work.
I sent the transmission back to them after well over an hour on the phone troubleshooting it (again) with one of there "experts". They decide it needs to come back.... again!! Then the guys REFUSED to accept the delivery from ups. That means $250 down the drain sending it one way, and then having it returned for another $250.
They sent me a 3rd transmission (yes, you read that right, 3 transmissions so far)... This time, the deep pan and tone ring were still missing but the trans seemed to be working.
Moral of the story, go to a reputable local shop, or go with the B&M or TCI. Stay as far away from the transmissioncenter comapny, they are crooks.
