I was missing one of the jury strut spacer tubes, one of the round tubes that go between the jury struts, and ordered a new one from Univair ( pn u12591-000). When it arrived it is 5/16 inch shorter than the original one I have. Now i'm wondering about all my jury strut lengths. Its entirely possible that in the past parts from other acft types may have been used. Does anyone know how to determine the proper lenghths? Is there a particular print that shows this? My measurements are, from ctr to ctr of holes, front 21 3/16 in, rear 21.5, spacer 16 5/16 and the new univair spacer 16.0 in. Thanks, Steve