Sunroof viberates a little when closing... Anyway to tighten this up?

[A.Tech]

I was noticing that when closing my sunroof it sometimes when it makes the halfway point vibarates a little so it makes a shaky sound. The sunroof it self is perfect it makes no leaks and closes and opens perfect.

However I do wish there was a mod or something out there that can make it go a bit higher than a lousy 1". Most bimmers and Mercs go like 2"s. I took a look to see if there was some kind of adjust but there seems to be a uphill guide that it uses when going up. That guide does not look movable so I dunno...