I just built a new rack that I am going to keep snakes that are over 1000 grams in only. It is already built and wired and everything is done. I certainly am not going to take it all apart and build it all again so I am asking if it is ok or do I need to make some modifications.

The previous rack I made I used 1 CD as a spacer and ended up with a few levels that were a little too tight, so this time I used 2 CDs. No problem there.

However, what I did not notice until now, is that the tubs' upper part aren't exactly a straight line. The left and right of each tub is higher than the middle part, this it forms a slight "U" shape against the wood. It is very subtle and not noticeable until it is against the wood top. As a result of this, there is a 5 inch area in the middle of the front and back where there is a bigger gap between the tub and the wood. The gap is 3/8 of an inch.

Is this ok? Obviously the snakes can not get out of it because the rack will only be used for 1000+ snakes. But I just wonder if this can be an issue.