[wll]

I solve this issue i have with one of my slingshot by putting a little square of bycicle inner tube on the fork before attaching the bands

Yes, a good point, I slide a 3/4-1" piece of thin tubing over my F-16 forks when I use a rubber band tie ... rubber sticks well to rubber and it holds. That black you see around the fork tip is the rubber tube that goes under the rubber band wrapping to the base of the fork and it holds very well.

wll