Taxied my plane from my hangar which is not heated to the FBO heater hangar today. Getting ready for DAR inspection tomorrow. Some things happened which I didn't expect but there were a couple of knowledgeable mechanics to offer advice. The engine ran very rough and I think the plugs were fouled. I have started it previously and it ran fine. I also got a lot of oil on belly, I assume it was the remants of the preservative oil that was in the engine when it was store. The rest of the controls seemed to operate ok. Hopefully I can get ready for the first flight soon.