I have an 89 turbo maft pro, 60-1 turbo and all supporting mods. I had the auto transmission rebuilt and ever since it has been acting strangely. With the cable hooked up to the throttle linkage and adjusted properly the car shifts into 2nd immediatly. (the car starts out in the wrong gear) If the cable is left unconnected the trans starts out in the correct gear but the shifts are slow and mushy. The shop is lost and has been working on my car since before fathers day! Please help