Window crank stud too short for custom made panels

[toofun]

Hey,

I am in the process of making some custom door panels for my 69 camaro, but ran into a little problem. The panels I am making are thicker than the original ones so when I go to put the original door crank on it, it doesnt have enough length to go on the stud without hacking up the surrounding area. Does a company sell an attachement to go on the window crank stud to lenghten them? Any info would be greatly appreciated.

Thanks
Toofun
Mark