Mossie, I have a DVR XP (and accessories circa 2011). I may have the machinery but not the associated jargon.
If this is of any benefit,
please point to the measurements you need... It is a metric shop so you might need to reach for an abacus to do some conversion.
Hmmm, time for a touch of WD40/Silver-Glide.
If your first cut is too short... Take the second cut from the longer end... LBD