Oil pickup distance to pan too much

[conester2013]

So I checked the clearance of my oil pick up to the pan on my LS3 - i went with a Moroso pan, windage tray and pickup....I got .63" which is too much....I'd like it to be in the 1/4"-3/8" range. So to raise the pick up higher, can I install washers under the windage tray to raise it and then bolt the pick up in over the windage tray to close the distance? What have others done when in this situation?