i think sin raptor famring got nerfed when they fixed the bug with SA where it would target 1 enemy at a time(same time eles got hi with the nerf bat about that)
It's still possible to farm raptors with a sin. Normal mode you can get everything but the boss, and Hardmode with a a/w 100b and a mop hero. I still haven't figured out how to take down the boss.
Slightly off topic but as pointed out njah : http://www.guildwarsguru.com/forum/1...t10470389.html , you can W/N (even after the BUH-change) everything including Rekoff, just cast 2 MoP's in the group (different raptors of course). hf!