BTW, EVERY time I take my bike through tech inspection for a track day, they say it looks tight and maybe it should be looser. You're full throttle and "in" the suspension a lot, so that squares off the swingarms on most bikes and effectively needs a longer chain.
In other words, just keep lubing and don't worry about it too much. In fact it's not clear that lubing modern chains makes them last longer, though it just seems wrong not to. I lube mine every other tank of fuel.
I adjust the chain when I feel a lot of backlash downshifting.
2005 DL650 (sold) | 2009 DL650A (sold) | 2008 Tiger 1050 ABS | 2012 WR250R | 2008 CRF100F