Yes we did before spliting the engine, the plan was to send a camera through the spark plug hole to see what was going on. In any case it was one of the first things that we had a look at but they are all in tact. If not anything like that, it might have to be said something has fallen or was placed somewhere along the intake during a previous service or something and has finally made its way into the cylinder. The car was breaking down at boost when warm before this but I cant this being a cause of that.