I figured it would be easier to level up if the base and floor purlins were in... so we squared it up and got going. One side of floor purlins are all bolted in... other side we'll finish up tomorrow. The kit comes with purlins 24" oc... I ordered extra to go to 16" oc. Kinda thought they'd drill the holes for 16" oc... but NOOOOO. So that's been rather a bother. It might not look like much... but I'm a fat computer guy that smokes too much, and my help is an older-than-me computer guy that also smokes too much. We can't go like we used to. PROGRESS, anyway.