Apologies if this is in the wrong section. My tranny was having difficult shifting into first when I came to a stop. And I was getting some shuttle shifting at 15 MPH. I installed the Borg Warner Governor Pressure Solenoid & Sensor. It worked great for 2 days. I drove about 60 miles in that time. Then, after parking and leaving the truck for a few hours, it has no forward gears. Nothing at all, I can't feel or hear any shifting at all. Any ideas before I tear into it again?