It is really hard the first few times. I push up and out on the tabs (from the outside) really hard and it will come loose. But like Rick56, I just leave mine unlocked unless I'm winterizeing or putting it up for a while. Never had any bug issues with it, but sometimes if it's windy the flapping will bug me.
2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)
Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!