Enjoy the site. Please feel free to contribute.
I have a few Dolmars myself.
I had a couple model airplane engines that use the Dolmar 111 type piston and cylinder. I showed one to the local Dolmar dealer and he gave me a 111i that had been under the work bench several years. I eventually put a new carb on it. It runs great. I bought a used 6000i that was in nice shape and it is a real sweet heart.
Then I have a 5105 and a couple 7900's.