good advice from Mike.
its a rare machine with only 150 made.
did u play this as a kid ? what is the machines history etc.? Youve' had it for 20 years in storage by your PM. That might have been a good thing, less use etc.
Depending on where u live, there are a few members who specialise in doing full restorations to make machines live to see another day properly for a long time etc.