most of mine either came with vivs that i got second hand but i did once buy one from 888 reptiles. I found on mine it was the part where it kinked on the long part that made it not fit between the glass doors. Is that where you are having the problem? I just used some pliers to straighten it out a bit and eventually it fit through. It was a pain in the rear tho.
I just use rubbber wedges on most of my vivs as they are quicker but I haven't got young children that I have to worry about opening vivs. You also have to make sure the doors don't open a little bit as you push them in.
i like the rubber wedges - ideally I'd use the metal ones but I had a real nightmare fixing them to my royals vivs that I wasn't keep on doing it again for another 6vivs..
2.0 Normal Royal Pythons - Q and Little One 1.0 Chihauhaun Mountain Kingsnake - Simba
i use rubber wedges. they are easy to get on and off, and as long as you make sure both doors are pushed up against the wood, and that the rubber wedge is wedged in there is no chance of an escapee as it is idiot proof (may have forgotton once or twice to remove the wedge) and is brilliant for stopping drunk friends
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