I am trying out my new half blind dovetail jig and have a few questions:

1) when making drawers, my dado shows up as a hole in the outside of my
drawer. How does one avoid this problem? Not a big issue, but I don't see
the same problem with any of my store bought furniture. I assume that if I
make my dado shallower the problem will go away, but that brings up another
question. How deep in 3/4 stock should my dado be to make a strong joint.
I am using 3/4 ply and would like each drawer to hold at least 100 lbs. (in
case you are wondering, I am going for overkill here.)

2) I am having problems making the two pieces line up top to bottom. It is
off by 1/64 - 1/32nd give or take. The part of the jig which takes care of
this offset seems to be lined up properly and the two pieces are cut to the
same width. This offset messes up my precut dados requiring me to go back
and widen my dados ever just slightly. Is there a newbe answer to this
newbe question? Which brings me to my last question. I am using 3/4 inch
ply, should my dado be 3/4 inch wide or should I give it just a bit more
play since it is a draw bottom.