Seal off the carburetor inlet and tailpipe with heavy plastic and duct tape to keep humidity from cycling in and out of the cylinders with the valves open due to temperature changes. I've seen cylinders get rust pitted in just a few weeks when the temp and humidity hit the wrong levels. No matter where an engine stops turning, there will be a few valves open. It also keeps mice from building nests in the exhaust system.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!