Side loading door

Hi all how do you adjust the sliding door mine has to be closed quite hard to stop slight gap at the bottom of the door just looking for info hos to bring the door in a bit at the bottom thanks in advance for any help cheers

Ram Raider, 
Yes, I agree, a real pain.
it was suggested to me by a salesperson to reduce the internal pressure. open a window slightly. (The jury is out on that one thou.) 
Another idea that I believe is seen within this forum, and dependent on the model, is fitting a small grab handle (left hand, looking out) to assist with closing that gap.
If you find a solution I know many would be interested..

Opening a window or rooflight does seem to help and I've also put an internal handle to assist.

Many thanks folks will try the window or opening roof light trick thanks all again

Ram raider wrote:Many thanks folks will try the window or opening roof light trick thanks all again

Make sure the roof light blind is not shut!

Will do rgermain

Tried the roof light open and it definitely made a difference cheers all

I have the same issue as Ram raider. If I close the door gently there is a slight gap at the bottom. If it gives it the good old whoosh bang it closes. There are three obvious points of adjustment at the door roller guides. All marked with index lines on my WXL. I take the point about the air pressure. I to had an old VW Beatle. I think it ought to close without the whoosh bang motion. I fitted a small handle at the rear of the door which helps quite a lot but it's only held on by one upholstery screw so not sure how long before I rip it of. There should be a solution to this because a lot of posh taxis nowadays have electric sliding doors. If I ever summon up the courage to adjust mine I'll come back on it. Problem is I don't want to make it worse.