LRF weirdness with Calibre 0.7.44

[cyprinella]

I've got version 0.7.44 and I'm noticing that when it converts epubs to lrfs, the file size is like ten times the size of the original epub (like 1.0 MB or more when files I converted on older versions are much, much smaller.) and my 505 chokes on it. I've been trying to download one really long story from A03, and I'm converting it because the epub from the site comes up empty in my reader every time. It works if I convert it to RTF and load that. If I convert to LRF, it never loads and freezes my reader. Anyone having a similar problem with this version?