Welcome to the forum.
Since the bike is new to you, get your hands on a Honda Service Manual and go through section 3, all the maintenance stuff. That'll familiarize you with all the basic stuff. Ride and see, but I have to agree with what's already been said, suspension upgrade is the biggest improvement that the RC51 responds too. It really takes the bike to a whole new level.
I'd suggest clearing the ECU's Self Diagnostic Memory. If there's anything there, it's old issues. Now if you get a blinking FI light, you'll know any codes you read will be new and relevant.
Last edited by jondog9; 05-05-2018 at 12:10 AM.