Why not put a felt wrapped block under the tail that levels out the fuse? I have seen it done before without any undue stress put on the plane. Although there could be an accident on the way to the field from the attention drawn by a 90" long plane on top of an Explorer.....

ps. Eric, partially based on your review, I bought a Zen 50 two weeks ago. I had been thinking about a pattern style 40, and the Zen showed up used at the right time my wallet needed to be lightened. It's got a ST61 with pipe and all the servos installed, I just need to fit arms and linkages. Thanks for your insights in the review.

Steve