I have a Supertigre 75 which in a cowled TF P-47. It has been propped with a 14X6 which is well outside the manufacturers recommended maximum of 12X8 (att). The reason given was to slow the airplane for landing and to keep the engine speed down while breaking in. I believe this will prevent the engine from unwinding and breaking in properly. Would this not also cause overheating? My spidey sense tells me this is a bad idea....

Thx from SC!