I have found that adding a different type of extra handle works really
well for us.
I mount a stock Vanagon grab handle to the siding door just below the
window.
This makes it far easier and quieter to close the door while sitting on
the bed/bench.
Here is a photo with ruler included for positioning info.

https://www.thesamba.com/vw/gallery/pix/1861636.jpg

Mark