Despite all adjustments that we've made with the hitch (in its lowest position) and the pinbox (in its highest position), we're still towing a little nose-high. The weight distribution of our 5er is ...
Others above have some good solutions. I wanted to add, that towing slightly nose high is normally not an issue. I agree with you, in your case, with extra weight behind the axles, may lead to your chucking issues. I think you would notice an improvement with a level tow.