Hi guys i just bought my 1st gtp I love it, pretty darn fast. I need help with the shifter tho. The car wont go into reverse or park even tho the shifter goes into those positions. It has gone into reverse be for and park as well. the person i bought the car from said he thought it was a shift position sensor under the stick. i couldnt find a part by that name so i just got a new assembly (not cheap) but its doing the same thing. I know reverse works it went into reverse on its own once. Thanks in advance to any tips you can share