Thanks Terri, here is the next run.
Today I received an order of Albion Alloys micro tubing from M&M Models, so I decided to give the Pup a break and get back to the Spad and finish the Hisso engine I started this project by making a hash out of.
I attempted to make plugs like Des showed in his article on detailing a Hisso. I'm not that good and ended up with a modified method that worked for me. After removing the cast plugs, I drilled a 0.5 mm hole all the way through the cyl bank. The plugs were made by stringing lengths of 05mm tube onto some surgical steel wire. A little thin CA wicked into the tube secured the tubes on the wire.

The surgical steel wire was cut between the brass tubes and the resulting "double plugs" were inserted through the holes through the cyl banks.

After painting the plugs white and trimming the surgical wires to represent the tips of the plugs, the plug wire harnesses I made earlier were added and the leads trimmed. The camera may show a bit more magnification, but to the Mk.I eyeball they look good enough to me.

So I have a question to ask before it is too late to change my mind. What color should the rubber hose fittings on some of the piping be painted. They didn't put carbon black in rubber tires until after the war. I somehow don't think they were tan or pinkish gray as some WWI tires. I am thinking a reddish color as I have seen red rubber hoses. That would have come out as black on the B&W Ortho films of the day. Anyone know for sure or have strong opinions please sing out.
sp