2018 Spark throttle sticking

3up with IBR around 50hrs. One time out was fine, next time out I notice the throttle try and stick half way open and worse randomly after full throttle bursts! No visible dirt or debris around the trigger but feels like a physical issue to me. Are there specific places I should lube or look for issues and how do I get to them as I can find no diagram on disassembly of that area. Thx!

The throttle is essentially fly-by-wire. Take it apart at the handle bars and you’ll see all the components are there. If there is something making it stick, it’ll be right at the lever