These are the tools for PFP that I know to exist.
1) original Marzocchi special tool, Zip Ty racing offers it but at the end I didn't ordered it. Don't remeber actual price but check their website, not OEM expensive. Haven't tried it. Doesn't fit if you use air bleeders.
2) special tool #2, made by a German Beta dealer. Can accommodate bleeders and is claimed that it can be inserted without removing the bars.
Check the holes on the side, probably this is how you can adjust it (with a small screw driver or similar). Cost is 30 Euros +tax but when I contacted them, they needed to make 10 pieces minimum. It's been a while, I may look at it again. Sorry, only small photos available...
3) ... or make your own tool as Glen suggested. This was made by a friend and is cut so it can fit in your waist bag.
It can be used as a door handle as well
'10 RR450, '11 RR450, '12 RR498, '13 RR300, '13 RR300 Racing, '14 RR250/300 Racing - all gone
'17 RR300