My fork oil kit has arrived along with a quart of 10W fork oil, so it's time to check the fork oil level. I put my bike on the rear axle stand to hold it level, then felt the bottom of the fork for a drain plug. My TW is a 2003 and I thought it wouldn't have drain plugs from what I have read, but I felt holes just behind the axle. And after looking inside I can see large allen screw heads. So my first question is, are these drains or something else?