I'm installing my front JKS adjustable trackbar. Well, I destroyed my "cone" washer supplied by JKS. Other than calling JKS tomorrow and ask for a replacement, is there another alternative that I can use? thanks for the help.

Try posting in the correct forum (Non Hardcore)?...

Drill everything out including the rebuildable joint to a bolt size larger then the cone... Bolt it and go!

Haha!