Building another shed from the Better Barn plans. The plan calls for 2x6
joists to run to a 2x6 band that sits on top of a 2x8 mudsill. Some of the
tops of the joists are sticking up about 1/8 to 1/4 inch above the 2x6 band.

Here is the basic framing question....before you lay down the 3/4 plywood
floor, do you plane down the 2x6 joist so it's in line with the band joist.
Or does it really not matter that much.

The second question...the side walls go up first. The side walls are
sheathed right to the edges of the walls. When you build the back wall,
should the sheathing be attached to the ends of the side walls? The last
one I built I sheathed the back wall but there was a gap at the end of the
sidewalls where there was no 1/2" CDX.

Thanks for your time.