Was doing some searching on my newly acquired 318 with the B43g Onan.. Was reading about pulling the heads to clean up the carbon? Is there a write up on this? I assume I'd need new head gaskets to perform this task? Also is there a write up on valve adjustment? Also I was reading in thread from last year, the spark plug gap is .025, anyone know the points gap off hand, and are the points regular points or an Onan specific part? I don't have a book to refer to, so that's why the 20 questions.