It's me again Mike. If your door  is beveled (As they should be), don't use the paper template that comes with the lock. 

At a height of 38" above the door/doors, using a combination square and a sharp pencil, draw a horrizontal line across the lock edge of door. 

Continue the line around both faces of the door/doors. 

On the high side of the bevel, measure in from the edge 2-7/16" and punch with an awl.

 On the 'low' side of the bevel measure in 2-5/16" and punch. 

This will position the bored holes perfectly back to back.( Bore these holes from both sides to the center.)

The latchbolt is marked and punched in the doors center and bored with a 7/8" speed bore bit.

There's a tool to use to stamp out the lock face's outline if you are new to using a chisel. In any event, Mark,punch and drill undersized screw holes to avoid splitting the wood.



Don't hang any doors right from the lumber yard, but DO lay them flat on the floor one above the others 'till they're accustomed to the room's temperature (3-3 days)  Stein