I put ISSPRO guages in about 18 months ago and I've been quite satisfied. They look good and the info is comforting. However, a problem has developed in the trans temp. It began as an intermittent bouncing needle and developed into crazy erratic, top to bottom spasm. I checked wiring and grounds and all is well. Now she is dead. I don't tow anymore, but I miss seeing the trans always running cool. I've read a few threads about problems with the trans temp from ISSPRO, anyone got any suggestions?