Thanks, I know how to take apart a No. 1. Point is, as said, I don't think this is rocket science, done a lot of filing and stoning in my 70 years as well as being a Porsche factory trained mechanic back in the "real Porsche" (356) days, when a lot of hand fitting was required to keep those "ladies of the night" running down the road. You a'int lived until you've changed the plugs in a 356 Carrara like my 65'. (Easiest way was to drop out engine on your chest while on a creeper, then put it on an engine stand, I was a lot younger then !)
Thanks !