By more time on the Picco I mean just a couple tanks to "clean it out" so to speak. I've noticed engines I've had in storage don't usually turn the rpm they had in the past right away. Usually after 3-4 tanks they do.

As as to the porting I mentioned - what makes them make more power is reading how they're setup to start with and adjust from there to make more power. Increasing the bore of the crank, changing the open/closing times of the induction port, boost port, exhaust port, and in some cases transfer ports. Changing the shape of the exhaust port, radiusing the bottom of the liner at the boost port, clearancing and smoothing the ports in the crankcase, among other things. It's a "package deal" if you will. I did this package to a Picco .28 buggy engine that is clearly the most powerful buggy engine I've ever run. Thr scallop cuts on the crank allow smoother passage of the inlet charge and also "stir it up" a bit in the crankcase. The crankpin has a bit of a wind vane pump action too and those cute may aid in pushing the charge towards the boost port. The fang cuts on the ports are pointless. Backfilling the front of the crank is really aimed to smooth out the idle and transition quality, doesn't really do much for top end power.