Absolutely it was positive. I don't believe there's anyone here that knows more about the ZDZ line of engines. Mr. ZDZ is not a bad thing, is it?
OTOH, we most definately differ in what we find useful and applicable, but I will defer to your greater judgement. From here on out, you're the man. BTW, did I mention that some switched to a Walbro carb for better fuel economy and reliability a long time ago? That's an industrial use that's not pertinent to an RC application, though.
I'm out of here