I have no problem with the -8 and -9 rivets using a Cleavland Main Squeeze rivet squeezer and 1/8" cupped and flat rivet sets, however the shop heads of the AN470AD4-8 rivets on the Fuselage Center Section Assy measure undersize after squeezing. Diameter is at minimum, 0.171" and height is under at, 0.033". The use of -9 rivets appear to be perfect and the heads appear to be the same size as the preassembled rivets on the fwd side. Does anyone else have this problem? I haven't seen any commments about this in the forums. I've notified Van's Support for their input.
I also noticed I have circular dent at the edge of the rivet manufactured head from my cupped rivet set after squeezing. Is this common or do I have to replace the rivet set? It has no defects, but does appear to be sharp at the edge of the cup. I purchased it some time ago from U.S. Industrial Tool.
Thank you lead builders for the help you have provided in the forums. As you may have guessed I am working on the Fuselage, having finished the Empennage, Tail Cone and Wings.