Kitchen slide adjustment

[HicksRA]

The kitchen slide on my Dutch Star doesn't go out all the way when extended. I can run my fingers between the wall and the rubber seal across the top of the slide rather than the seal being pressed against the wall.
Is there a simple way to effect this adjustment? I've been leery about trying to mess with it for fear I'd do more damage than good.
It seals at the bottom and mostly up the sides and just seems like it needs to be tilted outward a bit.

["007"]

After discussing someone else's kitchen slide found out that the slide is controlled by chains on both ends of drive shaft for movement.
We can not say a slide awning that's to tight will hold the top of slide from pulling flush with the header wall so that's out.
One thing to note the top of slide outside on its roof has a rubber seal the length of it to prevent and water or wind to enter the inside and the inside foam seal is so the top of slide just does not rest solid against the wall surface to wear the wall paper thin.
How to adjust would have to be something Newmar would have to address to have the whole fascia rest against the inside wall.
I see nothing in the new Newmar slide spec that address's your question.
Looking at the spec again for the 1000 time there is a trouble section in spec and my thought after reading if you know where the control unit is for the kitchen slide you could adjust the pot on the control for a very small advance of pot to increase current to motor. The motor would run a little longer and may pull in the top of the slide against the header wall. When I say small a very small adjustment and check the inside top of slide roof to make sure there is no seal of roof stopping the top of slide from pulling in flush to wall.