Weekend Warrior FS3000 Upgrades?

Robert, to change your shower faucet you will need to go into the cabinet above the kitchen sink, there is a space where the stereo and the fuel tank gauge is. Remove the right and left trim pieces and you can pry the shelf up to get into that area. you will see the rear of the shower valve, you unscrew the waterlines and then there are 2 faucet nuts that hold the faucet on, unscrew them and the faucet will come off. Save the nuts as most replacement shower faucets dont come with them. If you drop one in the wall they are std 1/2 ips faucet nuts you can get at hardware stores or plumbing supply. Make sure after replacing it you reconnect the waterlines tightly and careful not to cross thread them, after a day or two of having the water on re check them again for leaks.

I swapped my shower valve to a single handle one, mine used to have a matching lever handle but I would continually bump it while in the shower causing the water to go HOT, these valves use a "valley" cartridge, I swapped out the cartridge and put a std" Valley" handle on it and no more problems. As far as the water heater, sounds like an easy fix maybe an igniter, sometimes its not getting gas. whenever my gas has been off I turn on all the burners on the stove and once they are lit the the gas has bled past the fridge,wh and furnace and they will light faster.