Manny...Just finished reading the same thread. I think they really meant to say flat not level. In some instances level does matter such as when you're seating a wing to the fuse but for just framing up kit, particularly a SSE, flat is all you need. You mentioned you are building a table, assuming it is a permanent one and not temporary for building a single plane then I would make darn sure it's flat & level.

My SSE is all framed up and the covering will start this weekend. Hopefully the maiden will be the following weekend.

Damon