Have a Girard in our 2015 Class C.
Wouldn't light half the time.
Fixed that with dry lube spray on sail switch pivot point.
Another problem that jrocker
stated, "Water waste is unbelievable, because we spend most of the time in the shower trying to find that happy spot between scalding and shooting snow flurries out the shower head".
Solved that problem.
1) installed an adjustable flow valve on shower hose. Adjust for flow I want to conserve water and have a reproducible flow of water. Water flow will change temperature of water from water heater.
2) Adjust water heater for comfort with 100% hot water regular shower valve on.
3) We dry camp mostly and turn on shower to wet down, turn off shower to soap up and back on to rinse. Shutting down turns off heater and when turning on again you get a rush of cold before the heater cycles.
Solution: took output from low point hot water system valve (winterizing drain) and plumed to fresh water winterization drain. Adjust low point drain valve to just get the hot water heater to start. Now with water pump on, you will have constant recirculating hot water through the hot water system.
When shower is turned off to soap up and back on to rinse, steady hot water temperature.
I plumbed in two PVC valves, one to turn on the recirculating system (turning off returns to normal operation so the water pump will stop), and the other to drain the fresh water tank.
Another possible benefit is while the recirculating system is in operation, you are putting hot water into the fresh water tank. Could come in handy if caught in freezing weather.