I only address starting points with genuine Mikuni carbs. Anything else is "terra incognita"...unknown land. With knockoff anything, it's blind guesswork. It's not that all cheap carburetors are problematic; some work as they should. My approach is geared toward consistency, over the long term. The VM20 is a good value for $80...easy to tune, consistent quality and parts support. That matters when you need a small part, say, 2 years down the road. Mikuni is still there, as are the major suppliers...like Sudco...long after the ebay sellers are onto selling cheap knockoff POV camera drones. The L125 motors out there should be making close to 9hp and a VM20 fitted with a 140 main should be close.