I have a rivet shaver and used it on several rivets in my tanks, leading edges and the blind rivets in my flaps and ailerons. .005" to .006" high is really high. Did you install the rear bulkhead and shoot or squeeze the rivets while the sealant was still wet, or fid you wait for t he sealant to cure before riveting?
I would definitely shave the rivets in the tank skins that have an edge that is high, I defiantly would not drill those our and install the "non structural" blind rivets in this location.
A&P IA PPL ASEL
RV-14A kit S/N 140170