"Toller" wrote...
You noticed that....
The side pieces have vertical grain , while the front piece has horizontal
grain; I didn't think the 6" joint was long enough for wood movement to
matter, especially since they are connected with pocket screws.
Since the front piece would show end grain I figured I would put the front
piece between the side pieces, since they wouldn't be end grain. I
didn't
think the perpendicular grain would be as conspicuous as it actually is.


I wouldn't worry about that; call it a design feature.

I can think of a few fixes for your cabinet:

1st & easiest, why not cut out the bottom and drop it the full 2" that's
needed? You could suport the bottom with cleats attached to the base.
That is, if the TV base is small enough to fit into the cabinet base.

2nd & do-able, but will alter the look a bit; knock the cabinet apart, cut
off the miters, and a little more on the top, and add a block that will
connect the top to the sides. You could radius the exposed corner, of make
it from a contrasting wood.

3rdly, you might just have to make a new cabinet. At least it's a fairly
simply design.

You could offer the three options to the client and level with her; option
one you'll do for free, option 2 will cost a little extra for the repair,
and option 3 there's no way you can charge for another entire cabinet so
you'll lose your shirt. Or, if you think option one will work and the TV
base will fit into a dropped cabinet bottom in the base, tell her you've
solved the problem, and it will actually look better because it will hide
the base, and all you'll see is the tv screen in the cabinet.

Good luck, hope this helps.
And next time, get the spec sheet for the tv before you build! 8^)


--
Timothy Juvenal
www.tjwoodworking.com