Mine does the same I just push my J hooks forward (right hand and pull down on the roof(left hand) when locking her down. Try even just sliding the handle forward a few mm by loosening the screws underneath and then tighten them back up while putting force in the direction needed. Hope my ****ty pictorial will help, mine does the same, but I have no problem "battening down the hatches"
Had to do it all one handed(camera) but it takes some muscle to put my roof back up. I usually have to do it myself because my girlfriend isn't strong enough. Try just giving her **** and see what happens. My old boss used to say "if it doesn't work, smash it. If it still doesn't work; it wasn't worth keeping in the first place"
added in a picture of my roof doing the same, I dont know about other cabbys i've never checked.
I usually pick up the roof latch handles at any chance I can. They break of like they're getting paid to.