Last weekend I noticed that my perfect pass wasn't working, everything on the guage worked except the on/off switch (The most important part, right???) Anyways, on Tuesday I called Perfect pass (spoke with Carol, great person to talk to) and she said that I needed a new membrane for the guage. I told her I have a four day trip planned for the 4th of July and she said get it to me as fast as posssible. So, the guage comes out, get slammed into a box and next day aired to Canada. They get the guage, swap the membrane and ship it back to me the SAME day!! Talk about customer service!! I get my guage back a day earlier then expected and I'm back on the water! Perfect pass is a very expensive product but thier customer service backs up every penny you spend! Thanks again perfect pass for getting me back out there!