Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
Good luck with the project, if you have no luck with the top yoke I have a cast one that just needs one face machining.
Sounds good, what type of oil jet is in the head ? This will tell you if the head is a good match for the barrels. Am i working too fast for you