Hi Mate!

Thanks for the answer.

I'm not talking about exhaust seals. Those went in just fine.
I ordered 2 sets for the inlet. The viton and some normal ones and there lies the problem.
I didnt go for the Viton ones because I felt they went in too easy. It was a pain to take out the ones that were there.
But the ones I put had the hole in the center (valve hole) way smaller than the Viton and the standard ones.
I'm afraid they will starve the valve guide from oil.
The engine is already closed but I read this somewere and I'm afraid now... I will do it again if I have to...

Any idea?