Hi Wayne! Guess I have to plead guilty about not being in the loop about the recent VFO upgrade kit that you added to the recent parts packages. I guess this kit must be for very old K2's. Since my K2 SN is 1900, I take it that it already has the latest L33. It might be helpful to give a SN range on some of these kits. Keep up the great work! Thanks. 73, Rod WA9GQT K2 # 1900