Ok, my 1986 mustang is stock. has about 140k miles on it. When I'm going to like pull off at a light going kind of fast. or if I downshift into second gear when im turning will start to grind and i would have to switch it into first then down to second or just entirely skip second gear and go into third. Is there anything that could I could replace besides the entire transmission to solve this problem? Because I dont think I have enough money to buy a new one.