I agree about not leaving unsupported nyrod ends between the fuselage and the stab. They normally give you 1-1/2" of threaded 2-56 rod to use for the ends, which leaves the unsupported sections we are talking about.

I buy a 12" length of 2-56 rod that has 1-1/2" of threads on one end. If there is a 3" gap between the fuse and the flying surface, I cut the rod 5" long. I put the plain unthreaded end of the rod into the nyrod. Then I take my cordless drill and chuck on the threads. I thread the rod into the nyrod about 1/2 - 3/4 " and use the remaining portion for the clevis. I haven't had the threads damaged by the chuck. The result is the same as if you were using the 1-1/2" rod ends supplied by the manufacture.

John