Sure: http://www.fandom-rocks.com/forum-feeds/
Looking more closely at the rss.php file, I figured out that the number I change does not affect the number of topics shown in a specific forum, but rather the number of topics in the forum overall, so I guess the question really becomes how do I modify the number of posts shown when I am passing a forum ID?
I modified rss.php trying to reduce the number of topics returned in the feed, but it still returns all of them. Am I missing a step somewhere?
I am pretty happy with mine here: http://www.fandom-rocks.com/forum
I am hoping to get the quotes bug resolved in a new version and maybe customize it a bit more soon. So far I have only added the notification plugin and incorporated the FirstRSS plugin on WP with the forum RSS links – unfortunately it looks like it is feeding all updates, not just the most recent few. I’ll keep knocking away at it.