hey guys, I have a 2004 400ex. I just installed a 426 big bore with new weisco piston/rings. The first start went good for about 10 seconds, it started right up with no hesitation, then it started blowing whitish blue smoke out the exhaust badly, after that it started blowing oil out of the exhaust. I think the o-ring at the bottom of the cylinder that sits around the sleeve ripped when installing. my engine also use to smoke a little when cold before the big bore kit then stop after warm, which was due to my valve seals, i also believe the valves came a little loose but not bad. The bike runs great, starts great, full compression, no power loss. i will blow through my entire oil reserve in maybe 30 minutes, thats how bad its shooting the oil out the exhaust. What do you think the issue could be?