Hey guys—I sure am enjoying my New Model F SSK (industrial gray case, off-white/pebble colorway)!
As Joe has mentioned, it needed some "tuning" out of the box. Some keys didn't work, but all I had to do was remove and reseat them, being sure their springs were centered.
The spacebar sometimes stuck, too, but the fix was easy once I knew how. At first I thought the stabilizer wire might be bent. So I pulled the bar, removed the wire, made sure it was absolutely straight, and also slightly lubed its pivot points—but it didn't help.
Then I did what I should've done: I checked Joe's excellent
Model F manual pages and realized the bar wasn't
supposed to be absolutely straight, as this could cause it to rub in its plate brackets. So I bent the bar very slightly, like the manual showed:

...to create a tiny space between the wire and brackets, and it worked perfectly.
Model M's are classic—but not everyone realizes they were actually a cost-cutting version of the Model F, the first buckling-spring board.
Joe has made them even better by using steel cases that'll hold up much better than the original PBT cases. And if you think his prices are high, consider that in the mid-'80s, Model F's cost an average of $375—which would be
over $900 today.

So thanks, Joe!
Here's my beauty shot:

I'm also looking forward to my Round 2 Beam Spring, which I gather will be shipping any day now, and am pleased to see that Joe's created some setup videos you can access
here on his YouTube channel.