I need some fuel sending unit experts please

IMO, people put too much worry into the fuel gauge reading dead nuts on. Yes, the aftermarket senders are not "perfect" in some cases, but guess what? Neither were the factory senders and gauges, either. They are all approximations to give you some idea of when you might be walking on the side of the road. The simple rule I live by is this. As long as the fuel gauge reads correctly when it's close to or on EMPTY, that's good. Honestly, when you stop and think about it (and most don't because they just want to argue) that's all that matters.