GE monogram single oven
I purchased a single ge monogram convection oven off of Craigslist for 200.00. It has never been turned on and is brand new inside. The people wanted gas when they bought their condo and it sat in storage for about 2 years. We installed it today and turned it on to try it out before we pushed it in the cabinet.. It smelled like burning rubber and had some smoke. Also took forever to preheat. Hoping this is because it's still not been used. Any helpers ?