It appears to have been replaced rather than repaired - My original one had a 1AA1 serial number; the one I received has a 3AA1R serial number.
The R in the serial number does indicate that is a refurbished unit, put together by hand by one of our techs in the US. Glad to hear the performance is better than ever!
The Ascent does come with a silicone cap you can put on the stem to plug it, however, we don't have an accessory to cover the oven.Does anyone know of an oven cap or a thin sleeve( to contain the odor when the unit is off )is available somewhere?
This is true! We do periodically sell and bundle vaporizers with RYOT carbon lined smell proof carrying cases. You can check it out on the site here: http://www.davincivaporizer.com/carrying-cases/RYOT makes a small bag called a smell safe.
I think you can buy them from Da Vinci.
These cases are made to fit both DaVinci and Ascent units.