The USA system was set or defined back in the 1930's

Then it makes sense that by the time Europe set it's own standard (late fifties?) the technology was in place to adopt a higher resolution from the beginning. That's what I meant. I should have called it H'er D, not HD.

The black deposit under one valve cover indicates a problem at that location. Check the rocker arm shaft for looseness. I have seen them come loose and eventually destroy the threads in the shaft support and in extreme cases wear a hole in the rocker arm cover.

Waco Driver, your right about that rocker arm shaft being loose! It was the first thing I checked and I couldn't believe how loose it was, with that tightened and the valves adjusted the engine ran a lot better. With the other suggestions mentioned here like the 12x9 prop and richening the engine a bit more I couldn't tell any difference in the performance of two flights I did during lunch time at work....YAHOO!!!!

I couldn't wait to try these changes out and they worked great! The engine ran right around 9650 lean so richened it up to around 9500 and had trouble at all and NO BLACK oily mess at all!

Thank you everyone....you probably saved my Saito!

pywackit- good thing you checked. Glad the engine is running fine again

rainydave- that is exactly what happened. Yes, they had more scan lines than we did. They also had a better color range (gamut). You can see our limitations mostly on reds. Look at live shots and you will probably notice shimmering colors. Those are the incompatible ones. Hollywood has technicians to select only the right colors for filming. I don't know how HD is progressing in Europe.

Dave, I have a couple of Saitos and an Enya .46 MKII that are 17 years old with lots of time on them. I have used WildCat 10 and 15% fuel with 18% 80/20 lube for most of that time. Some PowerMaster with the same percentages was used also, I've never added castor and have never had to replace a single bearing in my fourstrokes. Can't say that about my two strokes though. I also have two early RCVs that I've run on WildCat 10% with 16% lube, (they recommend against the 18% lube).

Hi!
And over here in Sweden ...and in the rest of Europe, 10-15% all synthetic oil is the norm these days. No one uses castor oil in their fuel today...except we pylonracers who are bound to use it because of the regulations.

Jaka- I've read where many people in Europe still use castor.

Get a digital caliper; you can switch from metric to inch after measuring.

We Americans always think we have the best. Japan invented and had HD TV first. Who says 50 cycle is better than 60 cycle. I think thousands of an inch is as close as we got to metric and has served us very well. Oh if you had every once of business in Europe ( 100% ) it would only be 1/12th the US business. Turn that into metric...........