Fiddling with a used warp I got years back and never used.

1 - vibration sensor only triggers when the sensitivity is cranked almost all the way up and is only full on. Doesn’t seem to respond to vibration, regardless of setting or jumper. Should I consider this a PTP warp intended for the bracket mount sensor?

2 - if I build a link to a trigger switch is it on a TRS(stereo) or TS(mono) 2.5mm/3/32?

Thanks for any help!