12-10-12, 02:00 PM
The correct way to check the oil is with engine warm and bike on centre stand, taking the reading after a few minutes. I added the sidestand period just to ensure that no oil was hiding up in the top of the cylinder head ... it sometimes does that. You don't need to do the sidestand thing every time, though. 
As for the amount of oil you seem to think you're losing, that much would have to be either a leak or would show up clearly as smoke from the exhaust.
I suggest you clean up around the 'wet area' to satisfy yourself you don't have a leak from the gear selector cover gasket. These sometimes weep a little but frankly not enough to show up as a 50-mile level drop in the oil window.
Please understand that these motors can hide oil in various galleries and oilways and this could be the simplest explanation for your fluctuating level. Rather than obsess over it every day, ride several hundred miles between checks and see what happens.
In short, ride more, worry less.
As for the amount of oil you seem to think you're losing, that much would have to be either a leak or would show up clearly as smoke from the exhaust.
I suggest you clean up around the 'wet area' to satisfy yourself you don't have a leak from the gear selector cover gasket. These sometimes weep a little but frankly not enough to show up as a 50-mile level drop in the oil window.
Please understand that these motors can hide oil in various galleries and oilways and this could be the simplest explanation for your fluctuating level. Rather than obsess over it every day, ride several hundred miles between checks and see what happens.
In short, ride more, worry less.