In 2015 I bought a Nova Galaxi 1644 lathe as a Beta tester. I did not like 3 things about it (1)  the quill operated backwards. They sent out new quills to all buyers of that lathe. (2) The indexing sucked- you had to use a flashlight to see inside the 1/2" diameter window to see what notch you were in. I fixed that my self with a new 72 hole EXTERIOR  index wheel that I built off the detents on the wheel inside the cover. and (3) I did not like the touch switches especially in that the off and on switches were in 2 different locations. I asked the guys in Florida if I they could tell me the wires to hook up a SPDT momentary contact switch for off and on and they said it could not be done.
In 2021 The touch switches failed to work and Teknatool sent me a whole new switch box with all the electronics in it. This year the on switch took 3  hits to work . I took the old switch box and pulled out the touch switches and tried to make a wiring diagram to put in mechanical switches but I did not know if I had the right wires to the right  switches.  I called my Teknatool rep in Florida to verify the wiring and he said they were bankrupt and gave me the address of Teknatool in New Zealand.  I sent a letter and my diagram to New Zealand. The engineer gave me a list of what prong in the switch box went to what switch. I bought mechanical momentary contact  switches and a SPDT toggle for Off and ON. I made a box for the switches and wired them according to the list from the engineer. I mounted the revised switch box on the lathe and it works perfect- ONE SWITCH FOR OFF AND ON !!
Some photos of the progress below:
Here is the 72 hole index wheel with a spring loaded plunger to lock in a location:

Here is the way I have been using the second switch box with tape to keep the dust out of the touch switches and also a shot of the new vinyl touch switch panel they sent me:

Here is the box I made to house the new switches:

Here is the inside of the switch box showing the prongs and how I wired it:

Here is the revised switch box mounted on the lathe and running:

Now I can't wait for a lathe project to enjoy the new arrangement!!!!!!!!!..............Cheers, Jim