Sorry about oil on the track from the bike but have now found out why it happened.
I run 75% of the fuel through the supercharger with the remaining being injected directly into the inlet port of each cylinder, one of the electrical plugs on the back of the injector had hopped off during the run causing that cylinder to run very weak & hole the piston, the reduction in power prevented the change into top gear which sliced quite a lump off the terminal speed. All I knew was it lost power at the top end & was running on 3 cylinders which did get me back to the pits just as well I did not fancy pushing it back the best part of 1/2 a mile. I did not know about the oil until I looked at my right leg this was soaked with from the knee down that had come out of the oil catch tank.
Thats it for this year will rebuild it over the winter & try again next season.