My '95 GT stock tach is sticking. It's not responsive when I give it gas. Sometimes it's pinned at 0 at idle or when driving the needle doesn't move to the rpm's where it's suppose to be- staying stuck at around 1100 rpm. But if I reset my tripometer then the tach will start to work, for a while until it gets stuck again. I'm trying to avoid buying a new "used" cluster. I want to keep my odometer reading original. How do I fix the stock tach if possible or any other ideas is greatly appreciated. THANKS!