I have a greystone 29mk, and the kitchen slide seems to not completely close. when the slide is all the way in, there is a 1.5 inch gap betweed the forward part of the slider at the bottom and the trailer external wall. The top seems to be fully in but the bottom sticks out. I can see an adjustment link at the end of the slider rail but want to understand if anyone has had to make this adjustment before. thanks