I went sailing yesterday in 8 knots of wind. Sailing along comfortably and all of a sudden the car for the furling main popped out of the slide on the boom. We furled it back in and I went to the boom and inspected the car. Nothing was broken so I put it back into the slide and secured everything on the boom. Unfurled the main and got us sailing again. Wind picked up a little bit and the same thing happened again. Car popped out of slide. Does anyone have any experience or suggestions about this problem? Thanks.