Is this gap asking for trouble?

[DLLNP]

Hello!

I am putting together a viv' for my boa's. The viva have sliding glass doors and there is about a 4 mm gap between the glass doors where they overlap. My boas are about 38" long and 500-600g. I know they can't squeeze themselves through a gap that small but does anyone think that gap is too big? I.e. Would a boa TRY and squeeze through that and end up getting stuck..?