Hello. I recently got a hold of a Fender Special Edition Koa Telecaster which is made in Korea. No dents, rarely played, needs a bit of cleaning, overall in good shape. The sound is pretty good for its price. Anyways, my only concern with this guitar is the hardware. It just doesn't want to stay in tune. I haven't switched out the strings yet, so maybe that could be why it the tuning keeps slipping. But the head machines just feel cheap. Also, the bridge looks to be just a generic tele style 3 brass saddle bridge. So I plan on upgrading to a fender or a gotoh bridge. But at the moment, my main problem is switching the head machines. I am looking at Gotoh vintage style locking tuners (yes, I am a sucker for the vintage style tuners ) But the tuning machines on this guitar look to be generic. I assume they are similar to the Fender standard tuners?? Not sure. Now, what I want to know is will I have to buy the Stewmac conversion bushings? Or are there other Gotoh vintage style tuner alternatives? Also, looks like I will need to drill some holes on the back of the headstock, but is there also an alternative for this? Sorry, I don't know much about head machines. Any suggestions and recommendations are welcome. Thanks!!