Yeah, that was my guess too, I'll try to switch back to those horrible bosch plugs and see if the problem stops.
Member #2 of the Boston Green Mafia BMW-CCA #457574
1995 BG M3(sold) 2000 TiAg 4.4l X5(sold)
-2000 F250 V10
-2004 GMC Yukon Denali
-I do the things today that others won't do, so I will have the things tomorrow that other won't have....