Hi guys this is like the part 2 from the puffing one. i got a hihgline which had the head rebuild together with the lot chains tentiones bla bla etc...... and when i check today i found that plugs 1 and 6 are abit oily what migth be causing this????? or what is the solution???? remember i got 132,000 on the clock!!!!! do i need better s plugs cos im using bosh at the mo. any advice is very good at this moment ok cheerrss again.