after several weeks after applying the tank sealant to the trailing edge i removed the clecos, cleaned all the excess and cleaned the holes for the rivets.
With help of Lucio i backriveted the trailing edge obtaining a very straight edge with a limited bulge to an excess of sealant i didn't squeeze away properly. In general the result is very good.
After that we prepared the rolling of the leading edge making sure the rudder was laying flat and using a 1"" aluminium pipe. We didn't bend the edges as suggested, however the result is very good.
Final activities were dedicated to the counterbalance weight positioning, match drilling and final bending of the skins. We resolved to avoid placing a rivet in the middle of the two screws and placing instead a screw with the corresponding K-1000-08 nut plate.