Cover the head with tape. Dab the pins with some latex paint, align and press down. Remove and you have your marks to drill at. Do one tuner at a time, installing it before moving on to help with alignment.
'73-4 Ampeg V4B, Ampeg PF350,PF115HE, PF115LF, 115 Traynor, 1962 Fender Jazz, 75 Gibson G3, '10 Squier VM Jazz, Squier CV 60's P Sonic, Squier CV 50's P blonde, Epiphone Thunderbird IV