I've got a problem... upon changing my oil last night, I took out the plug underneath the bike, then opened the oil replacement hole. After the bike stopped draining for a while, I changed out the oil filter. I put the drain plug back in, and refilled the bike and started it for 10 seconds. Then like any normal person I checked the dipstick... well, to my dismay, oil came pouring out of the dipstick hole? It was so much, that I decided just to start over and change the whole thing again, so I unplugged the drain plug again and let all the oil drain out. Okay, this is where my question comes in... after all the oil had drained out the bottom, the oil just kept pouring out of the top (where the dipstick is) when it did stop coming out, the oil level just stayed right on the rim... one would think that if there is an open hole in the bottom, the oil would go down, not up??? It seems like a phisical impossibility to me, any ideas, is there a way to ensure all the oil drains out of the top part as well?