here is the elevator. the elevator core picture shows how TF has enlarged their lightening hole as compared to the plans which i assume shows their original design. you can see where i've marked out a little more balsa to cut out on the right elevator core and how is covered with the tips on the left elevator core. i even went so far as to hollow out the tips a little leaving about 3/32". have to be careful, though, on the ends because they will be shaped later.

also shown are the completed elevator halves. i modified the TF design by extending the tips in a more forward direction vs. the 45 deg. angle that TF uses. from what i can tell most MkIX's had this feature.