I believe the air screw is out 2 turns. I will pull the pilot to see what is in it. I am not sure about slide height adjustments. How do I determine that? I have never had to do that before. I just adjust the throttle cable and fine tune with the idle screw on the side.

You are 100% correct about the chain! I ordered one for an 87 and they sent one for an 89. I need to shorten it two links and then adjust. I was taking a big chance riding it that way. Not smart. It will be adjusted properly before I ride it again.