I'm a co-leader of a LS called Avatar. All Summoner LS, who merged with LordsoftheBeasts, an all BST LS. You, being a Beast-master, could join either, since it's now a joined effort. Both do Prime runs. All primes, including Fenrir, with normally a 90% or higher success rate.
Look up Darcy for LOTB, or Sanoshin, Akkuma, or I for Avatar. It'd be nice to have another join us. ^^
~Nieko