Concord I replacement tuners

Hi, I'm looking to change the tuners on my Concord I six string (earlier style with the larger pick guard) as it just doesn't stay in tune. Can anyone recommend any good replacements that will fit straight in (or maybe go in with just new screw holes)?

Thanks.

p.s. accidentally posted this in the wrong section earlier, apologies for any outrage caused...

I'm outraged!!

Right, Rant over....

I'm a convert to locking tuners, and specifically - for Matsumoku guitars - Gotoh lockers, which while expensive are very high quality units, and you're bound to be able to find the right type - so the correct style of button and the screw tang in the correct postion - for your guitar!!

I have a set of the correct button nickel/chrome tuners brand new, 45° screw mount holes from Korea by Jin-Ho (they make parts for Wilkinson, Vanson etc) very good quality tuners, pm me if interested.