Can't get lathe to Feed

The original issue earlier in this post was the lack of inputs, so this was Andy's solution to use one sensor.
I've got it to feed now by making a few changes, but it will only feed in M3 not M4, I assume because M4 is a negative rotation value.
Also, the actual feed rate looks to be at maximum (near G0 speed) not at the 0.1mm per rev I would expect to see.

I'm beginning to wonder if I would be making life easier for myself if I did add an extra sensor.
I notice on the encoder wheel we have the 100 slots and an additional outer slot.
Am I correct in saying the 100 slots are for reading velocity, and the single outer slot is a strobe for screw cutting?
Is this strobe slot what the 'Z' index pulse looks for ?

Would this be a far more simpler in proven exercise?

The 100 slots are for reading velocity _and_ spindle position feedback
during threading. That is, the Z motion is "geared" to the spindle rotation
by LinuxCNC during threading. The index pulse is used to start synchronized
motion at the same angular position each pass.

Yes to G95 F0.1

scaled is RPM, not RPS
It was RPS but I changed it because I didn't understand what was happing with an issue earlier on. I will swap it back

I switched back to RPS and used ABS, now we are feeding in G1 with both M3 & M4.
Thanks fella's

I've run some more test and have been successful with G71 in G96 CSS mode.

Next is to get a functioning G76.
I've wrote a small program to test, and the syntax is correct, only the machine now sits presumably waiting for the strobe signal to begin its traverse .
How do I now set up for this signal using ver2.9?

Andy,

Ref: encoder.N.missing-teeth

My encoder disc has 100 slots. Should I blank out two slots and use this method?
Do we leave the 'scale' still set at 100 ?