When storing any game, ensure when the game is disassembled, a WOOD PALLET is used to elevate the cabinet against floor moisture damage. Plastic wrap is unnecessary unless needed for transport, you can just throw old sheets over the games. There are NO problems storing in garages, unless the environment gets well below freezing, heat, and/or subject to extreme moisture or dry conditions. Overly dry or wet conditions lead to wood warpage or dry rot. General storage temperature listed above by Stern for guidance is accurate. Backglasses should be removed for long term care as they are much more sensitive to changes in temperature over time. This needs to be stressed as one bad winter can have devastating effects on ink screened glass due to peeling and cracking. I have stored games for decades without major issues, but it should be reminded that general overhauls are required when the games are placed back in operation. It makes no difference whether SS or EM, as things such as metal oxidation are present in both types of games, which includes the legs of IC circuit chips. Oxidation is not stopped by shrink wrapping. Storing pinball machines is like storing a more modern vehicle with electronic controls.