RE: Breaking in - OS FS 1.20 E Surpass Engine
Don't worry about the effect of temperature on the tape. It holds up just fine.
I'm not familiar with that brand of fuel. What is the total oil content?
I'm wondering if your prop selection, 16x8, isn't a little high for this engine. I run my 1.20 OS's on 15x8 or 16x6 and generally get around 9,000 rpm with clear exhaust. That's about 200-300 below max rpm. Just a thought.