[Stripit]

Yes the gas line can be loosened and slid over for access to the screws it covers up. Once the screws are removed for the black cover I had to use a wide bladed puddy knife to split the caulking sealant they used to stick the cover in place. Then it will drop down a bit and slide rearward to expose the tank valves and cables. Mine was wrapped in insulation and you can just pull that out of the way.

Our toilet seal is still the original but it has been removed and cleaned at least 20 times over the years. The rubber gets calcium deposits and what I found is the plastic ball also get calcium crust and it has to be scraped clean.I use a small flat blade screwdriver and carefully scrape as to not gouge the plastic ball. Whole job on the toilet is less than 15 minutes and if you don't position the seal/two halves of the toilet correctly the water won't stay in the bowl. If that happens just loosen the clamp and reset. Not a big job at all.