Has anybody here got any experience with changing the machine heads on their Ibanez acoustic guitar, and if so did you manage to find a machine head that 'fit' as in it fit the existing hole that had been drilled into the headstock for the machine heads that came stock with the guitar. I really really do not want to drill new holes for different machine heads, but at the same time I really want to change the machine heads to better quality ones. So I would really appreciate it if somebody knows of any machine heads that meet my requirements if they would let me know, and perhaps even post a link to somewhere that sells them, I'm still undecided whether or not I want to keep the machine heads gold like the stock that came with the guitar are, so colour at the moment is not important to me, though I really would prefer if they where not black. I've included pictures of the machine heads look like. Here are what all seven machine heads look like And here is a close up of the back of one the machine heads: So if anybody knows of any machine heads that will fit the existing holes I would appreciate it if you posted either a link to the machine heads themselves or post a link to somewhere that has them for sale.