Hello. New to the site. Good to be here. Still getting familiar with the site but I have a question about an old duratrax axis buggy I'm putting together. Can someone with experiance with these chime in if possible. I'm trying to figure out what hex's will work to change the 19 mm hex's to the 17mm to run different tires. The axis has a 6 mm axle shaft. I've heard some older ofna buggys had the 6mm shaft but not sure what one. The axis also doesn't have the holes for pins but a flat spot that uses a set screw. Any help with this would be appreciated. Thanks.