Likewise. Like feta I initially thought I was sitting differently as well sometimes (or changing in height over the course of the day or week) and just wrote it off to that. With this thread already showing three pages of agreement good to know it is not just me but (but bad to know it is happening).
You should print out this entire thread and take it back to the dealer breakspirit.
.......here's a lockpick. It might come in handy if you, the master of unlocking, take it with you.