Mike, I'd go along with what Ray recommends . . . I know 'V' tails need a long arm-moment for good pitch control and in any plane a longer tail arm-moment makes for greater stability. All of the mods Ray made to my kit's design make sense either from a survivability (strength) or performance standpoint. I'd do it if I were you but if you're interested in NOS class flying I'd first check out the rules or call Ray to inquire if making that Mod. would disqualify your plane from competition, from what I know all you can do to a kit is to strengthen the wing or other structure and add spoilers . . . I don't think you can do anything that would change the Orig. basic design concept or outline (or you can hope nobody notices) I'm not sure so you'd better check it out.
Rick K