Jim, Wine cork & whatever can work & work very well; I've made spacers out of a variety of things, but what I will suggest in this instance is something different.
Try threading in a long screw, but instead of a cork or spacer, install a fairly stiff spring! The spring will keep the fended in place, but move out of the way should something get jammed in there OR have a little give should you need it when removing the wheel.. Cheers -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/df48c0f6-49a9-4113-b90d-a6e4ed632cc0%40googlegroups.com.