Wow. I doubt if you have to go too far to get that running like a new $6000.00 plus machine.
Check the tires for a crown. If there's no crown there, then its likely that's the reason the saw was sold. Once crowned, the blade tracks like you want it to. A lot of Euro bandsaws came with no crown on the tires. When the makers were questioned about this, the owner was told in so many words that he's an idiot for questioning such a thing. Maybe things have changed these days.
That euro type guide, when worn out, will become your enemy. The quick solution is to get some Carter guides. Those Euro guides can be modified to run a lot better, but it takes some doing. The weak point is the bronze bushing wear in the side guides. Often that bushing wears so much that the guide wheels touch behind the blade.
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Side guide detail showing the bronze bushing that goes bad.
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Back guide substitutes using off the shelf ball bearings.