I'm glad to see that I'm not the only one worrying about how accurately the machine has been put together. I've just (mostly) finished one side of my frame so I've done a quick test fit. The bed rail and the guide rail are 0.1o out of parallel. Doesn't sound like much but that equates to just over 3mm over the total length according to my calculation :-(.

It's looking great though KC, keep the good work.