All I can say is if you compare bikes to modern cars how many air cooled, overweight, 2 valve low Hp cars do you see being bought by Millennials ? Why would you trash an engine that was spot on with liquid cooled 4 valve performance & retreat to air cooled diesel cement mixers ? Stupid is as stupid does - it all works until your base customer walks, and yea, they are walking - along with the new customer base. Build it, they will come. Don't build it, you got it - they won't come. Ain't Rocket Science. LEAD, FOLLOW, Or- Get Out of the Way !