Actually I guess you've got a little tiny bit of space there between the ends, but it's really pretty small - it would be better to either have a larger gap or make no gap and not have the caps.

I've looked a bit more closely at your text now and I can't find any problems with it falling apart, I'll probably need to know which particular area you're talking about for that problem.

It's a bit easier to see the text by deleting the outer surface like in the above image and then looking at it from that outer side rather than from the inside. Or also you might want to temporarily hide all edges (go to the Scene browser Types section and click the eye icon next to Edges to hide them all) so that the edge bleed through doesn't get in the way visually for that particular stuff.

- Michael