Seat is a bit tighter than stock. Mine fits more or less, and yes some of the material needs to be moved out of the way of the seat latches. Buy some thin bungee cord and simply tighten it to move it out of the way of the latches and seat pads. Mine isn't massively too large but I had to mess with it somewhat. Much smaller probably wouldn't have fitted.
If you have massive amounts of spare material I'd guess something is wrong but they aren't custom made for each model, it's pretty much some size fits all.
If you have massive amounts of spare material I'd guess something is wrong but they aren't custom made for each model, it's pretty much some size fits all.