I just bought an 07 yz450, and put on an fmf powercore 4 pipe tonite - i checked the oil, started the bike and let it run for about 3 minutes, and then i saw some white smoke coming out of the pipe. I shut the bike off right after i saw that, let it cool down a bit, and checked the oil once more just to be sure. I'm pretty sure that the smoke was just from the new pipe getting burned up/ broken in. anyone else have this happen to them? After this, i started it again, and let it run for about 5 mins, blipping the throttle here and there, trying to get my idle to where i like it, and then some coolant started spilling out of the overflow hose - is this normal for the new yzs? did i just let it idle/ warm up too long? any input would be appreciated!