Welcome to the CV Forum, you are in the right place.
Your research got you here, and you will find this a helpful knowledgeable place.
Your first priority might be to get your post count up over the course of a few days and then post pictures.
Those pictures are most informative if taken from the drive side of the bike, (the side with the chain)
Once posted you will find this group has many of the answers you seek.
Good suggestions on how to tackle your questions as well from SurferRosa.
We love projects especially with pictures.
Rick