I need a way of changing the set lengths on rectangular ductwork bends (square & radius) as I adjust these lengths to fill gaps with standard straight lengths at the end of a run rather than have a separate short straight piece as this is more cost effective and common practice by ductwork manufacturers. There appears to be an FEx value on the properties table but this is non selectable. Ideally what I need is a way to dial this dimension in for individual bends either on screen via the properties table, via stretching as you can with straight lengths or via an auto fill routine. I am surprised this is not already an option on what I believed to be fully parametric fittings.