Drill a hole through the axle at the appropriate place and use cotter pins to hold the wheels on. Much easier than trying to thread the axle.

Something seems wrong. A bidet is usually hooked up between the water supply and the toilet and the toilet only has a COLD water supply. Any heating of the water is done inside the bidet itself - at least that's how mine works, so a new water heater should not have made any difference. How the hell do you have your bidet hooked into hot water?!!

Now you see why paying attention in school to those subjects that you think you'll never use in real life is good advice. Lets hope we don't see you as a nominee for a "Darwin Award".

Wow, what a fucking idiot!