Thanks very much for the reply. I have searched high and low for people with similar issues and have not found anything. If someone is not sealing at the bottom they can simply adjust the "pull" on the hydraulics or linkage. However if you aren't sealing at the top as mine is, that doesn't seem to be an option.
I have already spoken with LCI and they told me that it sounded like a coach issue and not the slide mechanism issue so they couldn't help me.
If someone on here has some thoughts that would be great!