Pretty bolddd.... but
I am not sure if I should compliment you or prepare a eulogy. However I own the 2007 model, M50 and it is quite the cruiser. Must admit, it might tempt you to handle it as a "sport". Problem is, its much heavier and balanced differently. The problem you are having is probably with the injection feed, or FI line, which is throttle matched and depends on the fuel tank pressure to some degree. By elevating the bike, you are offsetting the dynamics and causing the flow to vary. Given computers and such, it no doubt causes a shutdown and reset. I would not want this to happen during a "wheelie". This bike comes to a complete stop when the FI fails through false shift, no throttle, etc. Might be a good idea to "wheelie" another design.... and how did you keep from damaging those extended pipes?