Just some food for thought:
The bend joystick is originally designed so that you can hold the handle with your hand laying steady on the bench top or on the ground/shooting mat (even with the rest/top is on various heights), not to hang in the air. You can't do so with a straight joystick.
For that very reason, the center shaft must have a rotational resistance, if not the joystick/handle can move under the weight of the rifle on the top (it's a no no). This rotational resistance in fact also help the rest to be stable and reliable. You don't want the joystick to be very light and so easy to move, especially in F-Class with relatively heavy recoil rifle, etc, unless the user hold the joystick all the time / when shooting and your hand is quite steady.
In fact, not all hands are steady. Some prefer to hold the joystick, some let it "hang in the air" while shooting. Some prefer light or extra light joystick action, some prefer a firm or stiffer joystick action, it's preference thing. But one thing for sure is, if the joystick is very easy/too light to move it could also "translate" on the paper, you can't make more X such as with some resistance in the joystick. I think that's why my rests are in very high demand, just because they are proven, last for years, reliable, and also have the best resale value.
For benchrest shooting, Paul Schmid and I invented the counterweight last 2005 (which then adopted by my followers) because it is generally smoother, however in FClass we already have a lot of stuffs and heavy to bring on the line. We don't move from the sighters to the record or vice versa such is in point blank BR, too. In FClass (which has been my bigger market) we don't need extra light joystick action for the aformentioned reasons above, that's why I make the standard version much more than the BR version.
Yes, smooth/fluidy joystick action is a must, but not too light / too easy to move.
I could be wrong, if so please correct me.
Now on the rotational adjustment:
I tune each of my rests by myself, not saying that I am perfect but I do know my rests better than everyone just because I am the designer/maker. When you receive your rest, it is tuned for the best setting that you don't have to mess with. depends on your preference, what you might probably need only to twist the joystick for twice before use to release the initial friction in the bearings.
By time, my rests might probably need some adjustments, when done properly/correctly it would make the rest just like new again. I can tell you that not everyone can do it correctly, sometimes even resulting a worse condition.
Q: "I bought a used Mini and never needed to touch the adjustments because it was perfect, but I recently received my Mini X and left and right feels great but up it tight and when I move it up it wants to move back down a hair by itself. Do I adjust this with the bottom screw or the two front screws?"
A: Normally it would want to move up, not down, due to the up-lift springs inside. But once the rifle is on the top it would self balance and steady.
I would recommend you to use the rest as is, if you have the rest new.
If then you really need to adjust, please email me.