Has anyone removed and replaced the seat covers off the plastic seat frame? My Gen 2 looks like the vinyl cover tucks into a groove on backside of the cushion, maybe (?). I want to remove and replace covers and install heating elements, I have done this on stapled seats, but not sure how this seat comes apart and do not want to experiment on a good seat. Please share details if you know. Apparently OEM only sells the whole cushion complete. BRP does sell a seat heater pad but does not offer instructions on their site that I can find so far. Searched forum and YouTube and cannot find anything to indicate how these are put together. If I cannot find out I will use a slip over cover with the heating elements attached to it in the cold months but would much rather install into OEM. Thx.