I installed an AMC head recently and after a couple hundred miles took out the plugs to put in some higher end ones and noticed all four plugs were gunked up. so i checked the oil and noticed it was loosing a lot, where it had never before. Just curious if anyone else has had problems with these heads or if maybe something was done wrong on the install? mostly if there is anything i can do to fix it.
thanks

2000 amigo ironman, 4" suspension 1" body lift on 33's with 4.77 gears, tera lows, and no-slip locker.