Well, I got the step bit I needed at Harbor Freight and I got the U360s and restrictor plates installed yesterday.
My first impression is that I'm in love with these joysticks.
As I said before, I don't really have anything modern to compare to. I had 10 year old Happ 8-way joysticks with cherry microswitches installed before, and now with the U360s with top-mounted 4-way restrictor plates, it's just night and day.
Initially, after enlarging the hole just enough to get the restrictor plate through, I mounted it without spacers, so the restrictor was sticking up through the panel. As Andy had suggested, this was a bit... odd... not bad really, but everything felt just a little bit off as the plane of movement for the joystick seemed wrong.
A quick trip to the hardware store for some longer carriage bolts and nylon spacers and about an hour later, I had the sticks mounted just about flush with the surface of the panel - leaving just enough room to lift the restrictor and rotate it as needed.
I'm mainly interested in old 4-way games - Pac-Man, Ms. Pac-Man, Donkey Kong and Dig Dug being the most important.
Once the sticks were recessed, it was the closest I've ever felt to the real arcade Pac-Man or Ms. Pac Man at home - crisp, even movements with no wrong turns (at least none that could be attributed to the equipment - and not the operator).
I was concerned when I received the sticks about whether the design was going to feel solid, but once I had everything tightened up and in place, the restrictor does feel solid - no extra wiggle or noise.
Next, I played a few favorite 8-way classics - Time Pilot, 1942, 1943. The stick feels very good in this mode as well. No complaints whatsoever.
My next task in resurrecting my mame machine is to get Hyperspin/Hyperlaunch/Ultramap all working together well to automatically download the maps to the sticks.
Overall, I'm very pleased with the restrictors and the U360s themselves.
I've been waiting for a couple of years to make this change in my machine... I have a converted Dynamo Solitaire Challenge - it has a very small control panel since the original game was just a track ball with two buttons. The CP is no more than 7" x about 24". In that space, I have two joysticks each with 5 buttons, a 1 and 2 player start, a coin up button, track ball and a left and right mouse button.
Shortly after completing the cab back in 2000, I realized that I wasn't satisfied with 8-way joysticks - but I had no room for a dedicated 4-way so I lived with it. For the feel of physical restriction, I needed to have something that could be changes from the top side - and Ultimarc's latest addition was finally the right product for me... and it arrived just at the right time.
Thanks Andy for a great product.
I'll try to post some pictures tonight of my machine/panel. I think that the way it turned out is very good and you might want to consider offering a metal cp "upgrade kit" for the top-mounted restrictor - it was just a matter of longer screws and nylon washers and I think it all looks great from above when complete.
Ted