Thank you Ken,
I really appreciate your reply. I did take off the top end and everything looked fine. I couldn't see any scratches or damage to the piston, rings or cylinder.
I was thinking about swapping out that pipe for a tecno boss- any thoughts on that pipe? - trying to be more economical since this cost a lot more than initially expecting.
Do you think that if get that pipe put on the vm20 would be tunable? right now its not... if it does become tunable I wouldn't mind trying to tune this mikuni. I had a maxi prior to this with a 12mm bing that I tuned myself so I'm not completely new to tuning carbs.(edited)