81 atc 110 shift issue

[Dirty110]

Hello all, obviously I'm new here and hope someone can help me. My atc 110 sat for 2 yrs until this past weekend. It runs like a top and starts on the first pull everytime but it won't actually shift into gear. It worked perfectly fine for about 45 minutes, then got stuck between 2nd and 3rd gear. I got it spin around to actual neutral, now when it says it's in first nothing happens. No gears work in hi or low. Any ideas of what I should check first?? Or even where to get parts?

[shortline10]

Shift drum stopper is prob broken . Remove the clutch cover and its right their .

[Dirty110]

Awesome, thanks!