I’ve looked at some old Ultradyne lists and the durations on the solids show duration @.020” and on another list it shows “seat duration .020” so I guess it’s a lost cause trying to directly compare. I know most don’t give overlap specs anymore either and have read contradictory statements about various specs being useless etc. but I want to do side by sides, run the calculation etc. I’ve read Vizard states in general actual duration on solids is 12-15 more than shown @.020” but still......