David, yes I agree that it sounds fishy....but we have logged hundreds of flights each on at least 6 differant ViperJet kits set up how Tam suggests and flown full throttle for most of the duration, and all I can say is that it works. If I havent already seen with my own two thumbs that this is a reliable set up, then I may have been inclined to put larger servos in the stabs and not care that they stick out a bit. Tam has done so much testing with this plane to make sure that the customers have no problems, he has even went to the extent of purposely donating one of the kits to the full power dive and pull full up elevator with a G-meter just to see how strong the redesigned wings/spar system holds up. In our extensive testing, the flutter is non existant when installing the short servo arms and using all the torque of the servo. I believe the instructions describe this installation, and I have not heard of any customer's having a problem with their ViperJets when this system is implemented. Some may choose not to build this kit because of the "touchy" elevator set up, and that is their choice. However the problem has been identified and a fix is in place.
This kit is not manufactured by Tamjets, it is s Cermark product, but Tam has still treated it like it was his own to make sure that anything sold to his customers was trouble free. If there are still any questions/concernes please feel free to call TamJets for detailed pictures and instructions.
David, if you buy an airline ticket to San Jose California Tamjets will pick you up, feed you, house you, and take you flying. You will be handed the transmitter to our demo viperjet to fly, and if you can break it by flying full throttle with a JetCat P-120 (199.9 mph) TamJets will re-imburse you for your plane ticket.
Hope this answers some questions,

Dave