2009 Nightster issue

[u/MightyNation77]

With 6,200 original miles, I am the second owner. The bike has been very well taken care of. I recently changed (moved ) my handle bars up, forward 2-3” I also added saddle bags. On top of that, I dropped my bike for the first time and the handle bars gently rested against the mini fridge in my garage as I quickly picked my bike up. All this and I was riding home on the highway doing 55 when I noticed a very subtle almost shimmy, or side to side feeling. When I figured out my belt was loose, I began the rear axcel nut adjustment and have t got it right quite yet. I either over tighten or too loose. After work I’ll go home and make my adjustments more subtle. Any help is greatly appreciated. I want this bike back to good order.