Transom Bolt hole size

[alldodge]

Need to redrill the holes in my transom, anyone know what size the holes are. My 9/16 bit barely goes in on the two holes I won't be redrilling, but this is also wood. The studs are 7/16 so going to 1/2 would work and could redrill if needed "IF" I can manage to keep the drill in the center

 

[Fun Times]

http://www.mercstuff.com/images/transomfixture2.jpg
http://www.bing.com/images/search?q=...te&FORM=HDRSC2
Merc Gasoline Sterndrive Installation Manual

 

[alldodge]

Thanks much FT you the go to guy


Almost bought one of the fixtures but figure and hope I will only need it this once