Ok I'll stick my neck out and give my thoughts, and let other shoot me down.
Up front for a comfort ride full Suplex, or Suplex springs 120-140lbs(higher for better handling), mulfab bearings, and Avo shocks all round, on the rear Suplex springs reportedly very good. If Full Suplex up front then matching shocks on rear. A pan hard rod, and brake reaction bars up front, if your 4/4 is a later one and has adjustable camber try .75 degree negative will give great turn in, if not get current geometry measured and get Mulfab to make some plates.
Your grounding is probably knackered rear springs.
Have a chat with Peter at Mulfab, Wiliams, and New Elms they all know how onset up a Mog, they race them. Hope this helps.
