Real Estate in my garage is hard to come by lately. I recently acquired a rear bagging Briggs 6.75 HP Craftsman/Husqvarna mower someone was tossing. About 30 minutes work and $8 in parts and this thing runs like a champ. I know some mowers are designed to store vertically. How many of you are storing your older mowers in a verticle position? I'm assuming it would be safe if the oil does't spill out of the fill tube. Is there anything I'm missing?