I'm definitely convinced to wait and buy an appropriate frame (probably from a builder) and part it together...next year. I can't wait.
Had more problems today. This time the BACK derailleur sent the chain into the spokes and I couldn't pull it out. It's happened the last three rides, but this time I wasn't strong enough to extricate it. Had gone about 25 miles of a 34 mile loop. Luckily my wife had not ridden and she came and got me. I took it to a different LBS and they fixed it for 10 bucks AND they are getting me a new derailleur for the front chainrings to see it that problem can be remedied.
I will not be spending any money on "this old bike" if I can help it.
Careful with that rear derailleur adjustment. That's critical and your old LBS dropped the ball when they didn't get that right.
Builders custom frames can be high dollar. Take your time and do some research. Us tall guys have a harder time finding quality old framesets to fit us.
If you like classic lugged steel looks and have deep pockets here are some links I just picked up over in C&V. They only go up to 61 though which would work for me but might just be short for you.
http://www.bianchiusa.com/bikes/road/steel/tipo-corsa/
http://www.bianchiusa.com/bikes/road.../tipo-corsa-2/
http://www.bianchiusa.com/bikes/road/steel/dolomiti/