Good deal, Thanks!
The main reason I have not added the rapid touch is it was designed and many will use it with a tool as a probe and a touch plate to complete the circuit. A probe is forgiving and made to over run and bounce back to center. That is not true at all with a carbide end mill. I point this out so others don't see your reply and implement the change on theirs without thinking about it. But I am very pleased you could and did edit it slightly to suite your needs.
Can't tell you how hard I tried to make that the case. Just remember if you update it will be overwritten unless you save it as something unique and then will have to edit all the bits that load and bring it to the top. I would save a copy somewhere outside the Mach4 directory for safe keeping.
I have done very little with lua panels in screens but I think you could use it in one without much editing. There are no plans to ever have it as part of the default screens.