Thanks. Given that I have a 50% chance of having the tappets in the right position, what will happen if we work towards getting the engine started. Will it be obvious if they are the wrong way around and if so can I then take the gasket cover off and change swap the tappets over. It may cost me another gasket but is it better than taking the other things apart? One of the guys at the auto shop where I bought the feeler gauges also mentioned gasket paper. Is this an option?