I have built a ls/vtec for my 95 hatch, it is all together and runs great. The problem I am having is after about 10 mins of running at idle it starts smoking. I have replaced the valve seal, and found a cracked oil ring on #4 replaced all rings and still have the smoke. I have read somewhere that b18b pistons will not work with the gsr head, is this true? Could that be the problem?