If one was more concerned with the life span and long time playability of this guitar, not the stock vintageness of it. Would you suggest a tuner machine swap from the stock to top of the line acoustic tuner machine, in time?

Quote by CrackerJack465
Amps dont matter.
With any kind of valuable instrument, when you perform upgrades, you should keep all of the original parts around. So, if you're having trouble keeping in tune, go ahead, but put the original tuners in a sack somewhere, and keep them in case you decide to sell it.