A Crescent 16” jointer is for sale a few hours from me. I have a flooring project next year that will use a bunch of 12” wide boards so the timing is perfect. The photos show the machine to be in unrestored condition. The top is still bright, but the machine was painted yellow once upon a time. I’m not looking for a pretty machine, but I’ll demand an accurate one. I know this jointer has babbet bearing (it’s in the listing as being in good condition). The listing says that the jointer has a 4 knife cutter head, which I believe is the safety head. I’ll verify that before I go and look at it. The jointer has a 3hp 3ph motor. I’d rather not run a vfd for this one, so I may change it out for a 7.5hp 1ph motor that I already have. The asking price is $1,200 which might be a bit high for the visual condition. The question is how do I confirm the operating condition? It’s still hooked up so I’ll be able to run a sample board. If there sipe, i’ll know there is an adjustment issue, but that can be fixed. I keep on reading about people complaining about beds “sagging”, being “twisted” or not “coplanar”. Can you guys explain these issues to me and educate me on how to check for them? Anything else that I should checkout before buying?