Difficulty Reducing Tongue Weight

Too much tongue weight is a lot better than not enough. I pull a bunch of different trailers without WD but I can adjust the amount of tongue weight by where I tie the load down...more is better. I do not think the 1160 lbs of tongue weight is your problem but you could put a 55 gallon barrel of water in the back to decrease your tongue weight and see if that solves your problem.

I would start by increasing all of your tire pressures to max sidewall (doesn’t cost anything) and see if this helps.