You CAN'T take them out and maintain the proper declination. There really isnt a whole lot of pressure or weight on those bolts, in fact I'd feel comfortable with half of them missing. I have bolts and washers on every bolt on the bottom of mine and I didn't tighten the bolts beyond 1/8 turn after snug. Really, where is it going? Not down, not side to side, you would likely destroy the dish itself before the bolts break. It isn't a stressed part
That depends. If you use 4 washers on top and three on the bottom, you can have one on top and none on the bottom.
That depends. If you use 4 washers on top and three on the bottom, you can have one on top and none on the bottom.