Further to my previous post I am still trying to assemble the engine but I am not sure of the balencer and camshaft timing. Is it like this, Align mark on balencer gear aligned with mark on crankshaft gear then turn engine so mark on crankshaft gear to meet mark on casting then position camshaft sprocket (pinion) mark is at the top? Are there any tutorials on this forum? if so I can't find them. I am OK with a micrometer but not with a microchip. Many thanks, cheers Geoff