Well ... thanks to you all, I'm enthusiastic about the UCD again. I probably won't build until deep winter and move onto it next spring. My Christmas gifts are usually my source for this addiction. But, Yes, I'm leaning toward the Saito 82, which will be my first FS. Which leads to another question - I've read about inverted engine fuel leakage, can anyone ellaborate? Mac, I sent you my e-mail. Thanks again guys, I'll continue to monitor and slowly get equipped and build for the spring. Right now, I'm wearing out my Mach II with an OS 46AX, although new, this engine is too easy. And ... I'm considering a TH Uproar. Later!