Well mates, I finally got El Patron's lost sword last night. There is no method to doing it, other than what has already been posted: persistence and luck. The sequence of events for me last night was spending a little time with darkhart, then moving to Timmy, Neban, changing servers and back to darkhart and with a party of at least 10 other pirates of varying levels (mostly 30+), the sword finally showed up in a skull loot chest. I was using a level 40 pirate, but now I think I'm gonna try to do this on a new pirate and see what happens. Good luck mates.

I got 3 famed weapons yesterday, total of 11 this week... seems like famed are dropping normally now

It's all luck, thats all there is to it. I fought darkheart for 3 and a half hours and nothing. Then the other day 5 minutes and i get something!!!

I am just fighting dark hart and Neban with me friends... seems there's some kind of famed tidal wave going on... me and me friends are receiving at least 1 famed weapon every single day.. often 3 a day, and sometimes 3 in an hour! Starting to have massive amounts of duplicates, triplicates, and even quadplicates. Still no legendary weapon.. sigh..

man... i remember you, remember me? shadowfan... also, try el patron