i just had a sod of a time starting the bike, lost compression, kicked over like a two stroke. i've just looked at the cam timing ahead of changing it on holiday & found the camwheels weren't in line. i retarded the exhaust cam one tooth & now the difference is 12 pins & not 13. the camwheels now sit pretty much as per book-although both appear tilted slightly. at least they're (nearer)in unison. started first time. all i'd done was dry the plug & change the cam timing. could the cam timing really have altered just by kicking the bike over this morning? tried to start the bike with trainers on & paid the price by flooding it i guess. i'm really fed up. H & H tomorrow, it's now 10.05pm & i've yet to load up. it least it just thrashed up & down the estate ok. questions! if the cams don't line up with the top of the head perfectly should they be in advance slightly (as i expect) & rocked slightly anti-clockwise- or not? how many pins twixt marks before & after the yz timing change? why have i lost that solid wall as i gently roll it over to TDC (which i can no longer find even)& yet it just rolled up the road ok? going to give it a bloody good thrashing tomorrow with my stealy 10oz weight fitted but standard top end. will it go pop?