Been tinkering with her, changed the oil/filter and checked the sump strainer for crap... it was actually spotless in there! Amazing. Swapped in some new spark plugs, popped on the seat and took her outside for some sun. I had soaked the rusty chain with ACF50 which surprisingly freed it up, it's still going in the bin though in favour of a 530 conversion at some point. I yanked the Yosh exhaust off of my 80 GS11 and installed it on the 83 (new pipes coming for the 80!) and was able to ride it around my neighbourhood.... man it runs well! Carburetion is smooth and the bike pulls with no hesitation. It's actually better than my 80 is! So much for my tuning skills....