Thanks! Yeah, I was bummed about the slides. But truth be told, I was happy to switch back. The Accurides have really been great and I'm very familiar with them. They have little to no slop at all, and if there is any you can easily get rid of it prior to shipping to the customer.
I'm surprised your having issues with the KV slides. I picked up a pair after reading about them in your box build and used them in my box. One locking and one non locking, both 500lb. They are fantastic and don't allow for any slop. That being said I've never used Accurides. I do really like how the KV slides lock and unlock, very smooth motion.
Your build looks fantastic by the way!