Yeah Sam, 'ol Wall has entered my brain, I had a mate in the early 70's who used /em on his YDS5 250 yammy, that thing shattered eardrums, shook windows and frustrated it's owner, it was faster in 3rd than it was stock, but wouldn't pull any taller gears, and tended to spit broken chains onto the ground when dragging,,lol,,mamories,,,,,
I think I'll go with the power/thunder/adjustable jet idea at this stake, but I'll have to make it I think,,I already have a 90 degree barbed elbow on my float bowl drain plug, just waiting for another job, other than draining the float bowl, and checking fuel level at a glance.