FLYBOY (and others who may be curious)...

For the last 50 to 60 years every CL engine runs dry at full throttle at the end of each and every flight. Maintenance is generally zero other than maybe wrapping a rag around it to keep dust out. After run oil is never used mainly because fuel with castor is normal and rusted bearings are virtually unknown even with engines that have been used for an incredible number of hours. What I'm talking about here is literally thousands of flights on one engine that stops every time completely dry.

As for nitro being hygroscopic, it'll only absorb 2.5% water whereas methanol will absorb 100%.