Absolutely Bird...

Saito specifies no more than 4,000 rpm for the first 40 minutes of operation. Gonna have to be mighty rich to do that.

All the extra fuel/oil is unburned, and has the benefit ofproviding a surplus of oil and carrying away excess heat created by new as-yet-unmated parts working themselves together.

Also...lay off the prop for the break in. If 13-6 is the anticipated flying prop....back off to a 12-6 for break in.

Good Luck! Enjoy the engine!

'Nite