Rebuild 1990 Arneson Cleaner?

When we bought our house in 1999 we inherited the pool and an Arneson pool cleaner. When the Arneson performance started failing I replaced it with the Jacuzzi Tracker (see my other thread for issues I'm having with the Tracker) because I got a good deal on one.

I wasn't sure if I kept the Arneson (exactly like the Hayward Navigator) or not and my wife just called to say that she found it. It's a 1990 model :D and now I'm debating on whether to attempt a "refurbish" of that one, take it to Leslie's (will they just charge me for parts?) and have them refurbish it, or buy a newer one (found a two-year old model on craigslist).

Like I mentioned on my other thread, I think the Tracker caused my liner to crease on the angled floor about 8 inches (width of the wheels) from the wall - which is also where a seam is. We're getting a new liner and I don't want the same thing (creases) to happen.