When you unfurl your mainsail, does the sail come out of the slot on the mast? The reason I ask, when trying our boat out last weekend, all went well until we tried bringing our mainsail back it. It was jammed up. After inspection, I noted the bottom of the sail where the tack is connected was jamming on the mast. I was able to pull it out, then have someone pull on the furling line to get the mainsail to go back into the slot of the mast. It looks like there is a block on the end of the boom that can be adjusted. Would I need to adjust this?