I am thinking about the OS 7 cyl. and when OS will come out with some Gasoline radials or MULTI cyl gasoline 4 strokes......
They will do a good job when they do...
My saito 325 will be up in a plane soon..... from my understanding, this has a fan that distributes the fuel evenly
I ran it shortly on a test stand, rich, and cyls were un even temps....
Which makes sence, as rich setting will cause this....
There isn't a PERFECT scenario..... with radials...... I wouldn't get all caught up in it too much....just go and run it rich for break in but make sure it gets hot enough to actually BREAK IN the engine.
I see it with the nitro car guys..... they don't heat up the engine enough to get the cyl to expand..... then the cyl/piston wares out prematurely or the conrod breaks from stress.... then the engine manf. gets the blame...
when it should have not...