Mechanics for Mid-East Baroq-ulele

Hello Folks,
i own a Mid-East Concert Baroq-ulele with pegs for tuning. I'd like to change those against tuners, but canot find any that fit. Does anybody know, if there are tuners around that fit in a (approx.) 5mm hole instead of the usual 8-9mm?

Don't think so. You need to find someone with a drill and a steady hand.