How does the center step seat snap into the bench seat on a 95 209 ge? Its straight on one side the has about a 3 inch lip on the other. Does the lip go to the back or the front? If its in the front, does it slide in under the seat between the hinges? Seems like the lip should go in the front but want to make sure. The boat may have been altered in some way so it doesn't fit anymore. When I got it, it was laying in the middle of the boat unattached.