The hatches are only in the center section, left side is ele-rud servos, switch, battery, right is thr servo/fuel tank access.

The aileron servos are farther out on the wing with no hatches. Not to say a couple of hatches wouldn't be a good idea except for the fact they would be kinda ugly.

Or there is always the possibility of making the servo hatch mount. I've never tried it, but it would leave no hatches on the top of the wing and full access from the bottom.

The full length sheet on the bottom isn't a big deal, Jeff says it's to put a little twist resistance in. I like it because I didn't have to cap strip the bottom of the ribs.