Posted for Walter Atkinson <walter@advancedpilot.com>:

 If you would push the MP and RPM up when LOP, you could run more fuel through
it and go a lot faster with less stress on the enigne than the ROP numbers you
posted!
 
 Try 32-33"/24-2500 and 17.5 gph.  That'll give you 240+ HP instead of 227.
 
 Walter