#1
What tuners are stock in the Epiphone Sheraton IIs? The ones in mine suck and I want to get some better grovers, but I first need to find out what kind they are so I can actually get better tuners.
My Gear:
Fender American Deluxe Stratocaster
Epiphone Sheraton II
Fender Blues Deluxe Reissue
Teese RMC Picture Wah
MXR Carbon Copy
Keeley Modded TS9
Korg Pitchblack
Schecter Omen 6
Dean Performer Acoustic

#2
Get whatever you want.

If they are too big, file out the holes to be bigger, and if they are too small, fill the holes, and file them to size once again.
High as tits
#3
Consider getting a nut cut properly by a luthier first

solves most "tuner problems"