# ProTas Joystick FAQ
· **I already have a MagTube, do I need new cups?** All ProTubeVR products using magnets use the same magnetic interfaces and are universally compatible. No matter what HMD you own, if you already have MagCups you want the ProTas Base product found [here](https://www.protubevr.com/en/protas/656-7933-protas-joystick-base-without-cup.html "here
(https://www.protubevr.com/en/protas/656-7933-protas-joystick-base-without-cup.html)").
· **Can I twist the ProTas (rotate the z axis)?** Yes, the moving part is flexible, allowing it to rotate some distance safely, just don't go overboard.
· **Can I use a second ProTas as a throttle?** Yes, loosen the magnet retainer on the ProTas base to allow for forward and backward rotation. This allows use as a throttle.
· **How do I mount in my setup to line up the ProTas with the joystick in game?** ProTas works on many surfaces especially arm rests and sim rigs. Etsy has a lot of solid armrest hotas mounts that work well with ProTas. Desk mounts, speaker mounts, headset mounts; people have made use of all of these. You can attach it using Velcro straps or the reusable sticky pad found on the bottom. Refer to the [Quick Start Guide ](https://www.reddit.com/r/ProTubeVR/comments/163g3um/protas_quick_start_guide_just_received_your/ "Quick Start Guide
(https://www.reddit.com/r/ProTubeVR/comments/163g3um/protas_quick_start_guide_just_received_your/)")for more information.
· **What games does the ProTas work with?** Refer to this [reddit post](https://www.reddit.com/r/ProTubeVR/comments/ku0le9/protasvr_compatible_titles/ "reddit post
(https://www.reddit.com/r/ProTubeVR/comments/ku0le9/protasvr_compatible_titles/)") and use it more of a mindset to have when looking at a potential game rather than a comprehensive list of every single compatible game in existence. This is also covered in the next page.
· **The sticky pad won’t stay in place anymore, what do I do?** The sticky pad is reusable. Simply rinse it down with water and let it dry and it will be good as new. We also offer [replacement pads](https://www.protubevr.com/en/protas/659-adherent-pad-protas.html "replacement pads
(https://www.protubevr.com/en/protas/659-adherent-pad-protas.html)").
· **The cup is difficult to detach from the ProTas how do I make it easier? **There are a few ways to do this:
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1. Loosen the magnet inside the cup or the bracket or both using the provided tiny allen key.
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2. Apply something such as a piece of foam with a rubber band to weaken the connection.
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3. **Practice makes perfect.** Because the bracket is attached to something that moves it requires a slightly different angle and amount of force to detach compared to the MagTube.
[](https://help.protubevr.com/uploads/images/gallery/2025-03/20220624-151156.jpg)