Hurco

I'm still playing around with this KMB1 Hurco I picked up for home a few weeks ago. Was a Bx originally, currently has B boards. I've
ordered a set of 1000 line encoders to replace the 200 line, and plan to order a AMTS or CMC Bx upgrade MPU next week. In the meantime I've noticed that while the Hurco conversational code lets you choose reverse spindle rotation with a negative RPM entry, the actual spindle rotation direction does not change. If you call a tapping block, the control makes a brief attempt at reversing at the end of the tapping stroke, but does not actually complete a reversal. This Hurco has the High/Low gear head with a manual vari speed drive, and has a static phase converter the previous owner put in. So the questions are:
1.) Is the manual head capable of quick reversals for tapping? Several Kwik Switch non-rigid tap holders came with the machine, but they could have come from another Hurco.
2.) Do any/all of the Bx type MPU and servo control boards have outputs to control a spindle VFD if I decide to install a VFD?
3.) Can fast no load reversals even be done with the installed HD static phase converter? The static converter manual says yes, but I have my doubts. I have power from a 15Hp rotary converter available, and I'm tempted to see if reversal works okay on more proper 3phase power.
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