Need any CSS gurus to help me with this bug…

Hi, i run a wordpress blog over here: https://tales.tsncentral.com

I’m having a small problem with my comments boxes when the full article is viewed. Sometimes the comment boxes line up correctly and sometimes they don’t, i’ll show you 2 examples:
https://tales.tsncentral.com/?p=72#comments
In thise post the comments are lined up correctly and look fine, however in this one
https://tales.tsncentral.com/?p=75#comments
The comment boxes are misconstrewed. I believe it has something to do with the fact that i replied to those threads.

My current theme is a heavily modifid version of this one:
https://themes.wordpress.net/columns/2-columns/790/wucoco-two-column-0100/

I have not edited any of the sections to do with comments, though i did change the width (nothing else seems broken?). If anybody has any ideas pleae let me nkow thanks ??