Lost Feedburner feed File Size over 512

Suddenly, I’ve lost over 30% of my subscribers over the last week and new posts are not feeding.

For the past 3 days, I’ve been working on resolving and have tried:

– Pinging and Resyncing my feed

– Typing feed in address bar and get a 404 so tried to recreate missing feed file w/o success

– Deleted and trying to recreate my feed, I got message “Filesize is larger than 512K.” So I changed settings in WP to Show Summary and limit post number to 3.

– Still getting Filesize error.

– Tried posting in Feedburner forum and get no response.

Anyone have a clue how to resolve this #$@%@ issue?

Thx!!! 🙂