Used masking tape and then a sharpie marker to see where the tail pipe was contacting the exhaust chamber then used the table top belt/disc sander to grind a very shallow bevel on the edge of the pipe to allow it to slide in further getting the gap between the flanges down to about .040". Installed the pipe with the clamp and snugged it up to where I can just still turn the pipe while I decide on the turn down angle. Too low and I'll burn the grass during spool up, too high and I'll burn the lower frame tube, wires etc.. I currently have it at about 21 degrees down from horizontal, I'll check with some Helicycle pilots to get their opinions now that they're flying.
Removed the single output tach sensor that came with the engine after marking it then turning it in until it hit the sun gear ring which was 3/4 turn. Applied aviation form a gasket to the threads of the new dual output sensor and installed it the same depth, 3/4 turn out from touching. Slowly turned the engine while I listened and felt for any rubbing, there was none. Tightened the jamb nut.
