Mike makes mention of the dealers using a year as a cutoff. Why? Most parts are becoming obsolete, ie, no longer orderable and/or available, and no dealer principal is about to use aftermarket parts and back them up under warranty. You buy an OEM part over the counter, I believe it has a 60-90 day warranty.
However, you could take detailed photos on the phone and go around hd dealers and see if any mechanic would do side jobs. Someone looking at the bike would more take it on than showing a neglected bike that needs more work than what was suggested to do in the first place.
Another alternative is find a non-running lawnmower, begin to build a toolbox and see if you can take it apart and put it back together again. The point is not to get it running, the point is to learn bolt and nut tightening. You strip the mower out and learn how tight is tight on any nut/screw/bolt... then you can walk up to your bike and make the attempt.
So to begin the journey, buy what is needed on the BD tool wise, and begin to check/tighten every bolt/nut/screw you can find on the bike and make sure they feel tight. That's starting at the front axle and work your way up to the bars and begin from the neck, look down, what hardware do you see? Travel back until you are at the rear axle and belt adjust nuts... random attach is where did you leave off and at what direction? This way you have a routing from front to rear.