Well there is a bit of confusion here. The reasoning is flawed about where the cooling air comes from since there is actually a low pressure area created by the prop near the hub. While your statement that there is less load in the air is generally correct, this part about thinking the propwash will provide a cooling air flow is incorrect.

It may seem counter intuitive, but I promise you if you start and run a full scale on the ground with the cowl nose bowls still in place but not secured by the top section or restrained by some safety wire or something, it will pull the nose bowls into the prop.

These little engines don''t need the break in done on the ground as they''ll get hot real quick when you start pulling power with their smaller cooling fins and no significant airflow over the cylinder head/heads. Just run ''em enought to get the needles set and take it easy on the thing for the first gallon or so while flying.

Sorry about the quotation marks instead of the apostrophes, the forum still seems to be having a problem or two since it went down over the weekend...