A bit of mis-interpretation going on here, which is easy enough to do with written word and no push pull of normal conversation.Folks, I am not saying a Vincent twin is the same as an 8 valve Ducati; what I am saying is a Vincent is a two valve pushrod engine with some nice design features, and are not more complex than, say an 8 valve Ducati, just different.For example, shimming 8 Desmo valves, with 16 rockers, 8 of which need a zero clearance is slightly more complex than a four valve pushrod twin; and easier if you take the engine out! Building a short stroke manx from parts, bought and made, is not a walk in the park either..in other words, I am more than capable of the work, all I needed is a little information to do so, so I came on here, and have found the policy is to not supply info to non members, so I bought a book, which I am variously told will be wrong, not relevant to my bike etc. with modern BTH mag, Alton alternator, 18" wheels and modern-ish tyres I realise I have to interpret whatever I read, its always the same for special builders/users!! My bike will get used, and often in company with a real mixture of other bikes, many modern, so it needs to be right!I bought an (Egli) Vincent, because I love the design; we're all singing off the same hymn sheet here, as for custody of a bike, surely we are all custodians of everything. My restored (and well used) 1931 ex works cammy Norton sits in the Museum at Birmingham for just that reason ;-)I made the mistake of assuming the public area on the forum might contain some basic technical info while I am checking the bike over, but it doesn't, so there you go; my mistake.I may yet join the club, but just like a Kirby Vacuum cleaner, a heavy sales pitch puts you off what might well be a jolly good thingRide safe and enjoy yourselvesBest regardsSteve