speaking from a new purchase platform:
I was riding a 1989 Trek 1100 which I loved!! I've put close to 5000 miles on that bike in just about a year. No real complaints about that bike except that it was just a titch too tall...............until last night:
I tried a bike that fit me like a recliner just as soon as I climbed on, and I knew right then and there the Trek 1100 had never really fit me well, I had just made it work. My vote would be to get a new one that will fit you better, and then either set that bike for your specs, or get a fitting. My new bike is the 2007 Trek 1000-T with carbon forks and seatpost and I paid under $700 for it, so getting a good road bike for under $1000 is doable.
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"