Looks like the caretakers DO move and reposition them from time to time. When I was in Muncie about four years back and took my picture of the Perigee it was in the same location but displayed at a different angle, and the rudder was cocked to the right, (see attached...in this picture I removed all the background stuff, (same background), with picture editing software). I took the picture from a ladder.

At least this way you can see the planes you're interested in from different angles if you visit at different times.

Duane