Try to find out if there are any established spa repair services/technicians who regularly service your area. I'm referring to independent service guys/gals. Then call them and ask them which brands they service or have contracts with (some dealers contract out their service it seems). If this works, then take the time to travel to those dealers to wet test the spas. Hope this helps. In fact, when your warranty runs out (typcially within 1 to 7 years, depending on brand and what it is you need repaired on your spa), then you could still use this spa repair service to help you out and you will know he or she is already familiar with your brand.