Actually front axle pivot has nothing to do with what we are now talking about. I commonly have one rear tire off the ground on my M9540. You kinda get used to it if you operate in steep terrain enough.
This thread is long enough that I don't remember if you ever said if your tires are loaded or if you work with a counter weight of some kind on. It sounds like adding to what you have on now would be both safer and reduce wear and tear to your BX.
Nope no fill... I usually have my BH on and manual says don't do both and don't want to risk the warranty. If BH not on, then either my 6ft back blade or 6ft rake is on the 3pt. Those two don't counterbalance as well and even though both are recommended for a heavier B series, I can easily lift the backend with the FEL. I am finding the BX can pretty easily handle a little larger implement than typically suggested. I tried using the loader once without anything on the back and learned quick that it is bad idea!
