Clean Touch Probe

Was having trouble to dial in the touch probe. Decided to open it up. Found ground wire debris and realized it’s four opposing set screws adjusting a three point reference. None of the set screws should have to be tight. If you go in with one, the opposite side needs to go out. Once cleaned and know how it functions…was able to get probe centered to .0005. Just an FYI if it helps someone. Is there a better (but reasonable) probe alternative that plugs in & works with cutcontrol?