Congratulations on the new bike. Seems like we are in a similar situation. I also recently acquired a 535. It had been sitting for about 10 years... with only 150 original miles. I was told that mine was stored undercover in a shed, but given the condition of the bike it would seem that the shed had no roof and possibly no walls. Lol. I replaced the fuel line, both overflows from the tank, oil and air filters, oil, plug, battery, flushed the brake lines and thoroughly cleaned out the tank, as mine sat with a half a tank of ethanol for about a decade. Yours might not require all that but the four REs that I have owned all seem to have suffered from a lack of high quality OE rubber. I am also running non-ethanol fuel with an injector cleaner additive in the short term just to make sure everything is running smoothly. Best of luck with yours!