dya know how to use it? or followed the printed instructions?
unscrew the big cone bit all way back,
fully slacken the middle screw,
insert the tip through the PP & clutch plate assembly,
tighten the middle screw till the tip end locks onto the clutch plate spline hole,
screw the big cone towards the PP till it touches the fingers,
nudge the clutch plate around till the edge sides are exactly even distance away from the PP face sides so it's precisely centered (most important step),
tighten the big cone towards PP to secure its position,
now fit the clutch assembly onto flywheel n tighten PP bolts,
loosen the middle screw to release the tip end and remove tool, simples
getting the clutch plate centred on the PP face is very important so the input shafts & locating dowels line up, otherwise you'll never get the gearbox on or damage it.
when aligned correctly and the dowels are clean n fits the dowel holes exactly, the gearbox should simply slot in.