If anyone has in the past or is currently having a problem with a spa tach and is interested in pursuing a solution, i.e. possible refund or replacement contact me at riksracin@aol.com. You must be willing to submit a detailed complaint in writing. It's also a good idea to file a complaint with your States Attorney General.
what kind of problems are you having? everybody i know with a spa tach loves it. of course, that's like two or three guys. i love my stack tach.