hi im new to this but i have a fiat stilo and basically whats happened is ive had my seats folded and i went to push them back up today and the middle seatbelt is now stuck and wont let me push the seat back up as its really tight it looks like the plastic bolt thats on the seatbelt itself has got wedged into the slot where the seatbelt moves up and down HELP!!! does anyone now a way to sort this out? 