Re: [Ri3D] The Greenhorns
 

We actually used the stock bolts that came with the competition robot parts elevator kit. We simply didn't tighten them down all the way and they worked perfectly. If you are still having trouble with the uprights separating even after adding a second set of wheels on the other side of the upright I would recommend adding some sort of cross structure at the top of the uprights.

Re: [Ri3D] The Greenhorns
 

Thanks, we were looking at adding a cross brace but I wasn't sure if it will be enough.