Hi, I have a 2013 SD 187OB and my tow bar came loose. How do I remove the back seat cushion's back rests to get to the access port to re fasten the tow bar (as mentioned in a May 2013 post on this site)? It seems like it's all glued to the boat and I don't want to force it off and cause more of an issue. As it stands now, I cannot use the tow bar for tubing, etc. Thanks in advance for any advice!