I started with CNC in November 19, I ordered the XXL S3. Upon assembling I noticed the frame only had one thin cross strap in the middle, I ordered a 1/2 metal spoilboard from Ohio Diesel thinking that it would strengthen things up and all was good. Over the next year I had un-explainable depth and edge issues I could not figure out, thinking I was making mistakes or V wheels were off or whatever. What was happening is when I would bolt stock down with clamps, the bolts would pull up on the surrounding area enough to cause measurements to be off. Probably not noticeable to most but I try to gap pieces .0075 etc. to fit together, and was constantly having issues.
When I ordered my SPro’s I was very happy to see regularly spaced frame rails, and since all my models are setup for an aluminumn threaded spoilboard, I designed and special ordered 3/4" boards for my Pros, and the rigidity has eliminated all my wtf moments on gapping parts fitment properly. The S3’s I decided to keep and mod, are both setup with the 80/20 frame with 1/2" threaded aluminum spoilboards, and it has a strong cross section frame and base with lots of attachment bolts, and does not flex like the bent steel S3 frame did when I was tightening clamps on it.