Ok, am I missing something here? Went ahead and purchased the 3900 to replace our broken 380, took it out of the box, and neither I nor my husband can unhook the quick connector! It absolutely won’t budge...almost like the pieces were mistakenly welded together. Like I said, we had the 380 for many years, so we’re familiar with the push and turn movement. Has anyone else had this happen? Are we missing something?!?!