I bought a used vtec solenoid from a 93 GSR to put in my first gen b16a just to see if it'll fix my problem, but I can't seem to get the little green plug (which I think is the oil pressure sensor) to come out of the old solenoid...in the new one, it looks like it just threads in, but I'm using pliers to turn the sensor, and it just keeps turning in the old solenoid, wondering if theres something else I need to do to pull it out of there..