Made this posting more in hope than expectation,so was very pleased with your excellent response.Thanks.I would guess that the modern speedway engine is a pretty potent piece of machinery,even in standard form,so I can well understand that a reduction in power can be advantageous in some circumstances,i.e.massive power output is no good if it cannot be translated into forward motion of the bike. P.S. Was intrigued to see that you have access to engine power outputs and wonder if you are in the tuning business?