Older Atwood water heaters(GCH10A-3E) have separate T-stats, ECO for gas/electric heat. I am replacing the electric T-stat, ECO switches.The kit comes with springs to hold the switches against the side of the tank. The older (2000) tanks do not have these springs. Should I try to install the springs or discard them and just use the switches? Not a problem. If you try to install with the springs it makes the terminals protrude enough to interfer with reinstalling the cover and bends the retaining plate. What's wrong with just replacing the switches held in place with the retaining plate as it was originally. I'm not trying to be nitpicking but I have screwed up things in the past by thinking too much. Thanks for your help.