I was so reluctant to take the Sport apart to repair the subframe and address the oil leaks. It got worse as I went since the fuel injection/ignition harness was threaded through the rear subframe and I had to take it all loose as well (all the sensors, fuel pump, coils, injectors).
Between waiting for paint to dry and some parts to show up, I spent five or six days grooming and fettling and cleaning and tightening. Cleaned all the connectors and especially the grounds. Had the coils, and the battery, and the ECU completely off and back on again. "De-stressed" the exhaust system.
I don't know what did it, but the Sport runs better than ever! Sure, I adjusted the valves and new plugs, but this is fabulous!
Maybe every 89,00 miles/ 144.000 km the whole wiring harness ought to be unplugged and plugged back up?
In a fit of, "If it ain't broke, don't fix it!" , I didn't even reset the TPS, balance the throttle bodies, or crimp the relay bases.
I'm wishing this totally good juju on all of your Guzzis!