Hi All, I hope everyone is well! I'm restoring a 63 Avanti in the UK. Engine is R3 clone, heads, intake, etc with an Edelbrock 1406 carb. I have just refitted the engine after a full rebuild and having problems with the powershift transmission. I have the car in the air and it will select reverse and the wheel speed seems to increase relative to engine rpm. The first few times I selected drive nothing happened, the rear wheels have now started turning in the right direction but certainly slowly and not increasing at all in relation to engine rpm. oil level is good. Automatic transmissions are not my forte - I have the workshop manual. Would be grateful for any pointers. I have no way of knowing whether the transmission was ok previously (deceased estate). I do have a spare but likewise of unknown history/condition. Thanks in advance!