1. Yup. Those numbers are the ones I remember too.
2. I returned my FCOMs and QRH a year ago so I can't check up the exact values. IIRC there was addition of 1 kt to V1/Vr to values from the tables with up to 3mm water equivalent and 2kt with more than that.
3. 92 kt was our lowest V1/VR on 42-300, limited by VMCA. It was used in the normal conditions for weights below 14.5t. PW120 engine on -300 has RTO power of 2000bhp while I'm not sure about -500 but I think its PW127 output is somewhere north of 2400 bhp - hence the difference. If density altitude is not high, conditions are normal and there are no MEL items, 42-300 has really no use for the runway beyond first 1500m. Once upon a time I took of from 1100m rwy at 300ft elevation with OAT 28° C and RWC said our MTOW was structurally limited. Go figure.
Cheers, C. (not-stuck-in-the-ATR-any-longer)