On my Pantah 600 SL with total 100k km with its original Marzocchi 35mm fork during cornering a dangerous "wobbly" or "headshake" on steering is present over than 100km/h. Not any result by new tires , balancing rims , new bearings on rims , reduced axial gap of swing-arm , steering bearings no any freeplay and e.t.c. Also fork hydraulic oil 20 SAE not help.
It is obvious Marzocchi fork need overhauling as most probably the rebound damping is missing at all.
No spares any more in market ( especially these plastic rings on damp rod piston) and I suppose "lath-made" will be necessary if ....
Any suggestions , tips or photoes from your side during any previous overhauling?