why experience is more valuable than formal knowledge?
Backwards, by far. Assuming that the seatback is high enough to fully support your head to prevent whiplash. All military transports use rear-facing seats for this reason. (Except for jump-seats where getting out through the cargo ramp quickly is the first priority.)
Take it to a shop and have them look at it. It could be any number of things from a bad shock to worn steering parts
Cast iron drain pipe. Check with a plummer for proper fix. They do make fittings for cutting out damage and replacing with other product.
