I mean no disrespect to your raid team and/or raid leader, but if the expection is that you push those kinds of numbers or you are kicked from raiding then perhaps they are setting unrealistic expectations. Especially on normal modes.
From the log you linked, I see 17 tries of which only two hit the 5 minute mark. That's not even the enrage. If your healers can't even keep people up long enough, then damage isn't your problem or at least not the only one. Your raid should worry about DPS benchmarks when you're hitting the enrage.
My group has only had one night of attempts on Garalon. In 15 tries, we hit enrage 4 times. I'm not sure if my logs will help but here they are none the less:
http://www.worldoflogs.com/reports/avsnfvmz921evyla/
Also, looking at your logs, it seems unrealistic to have you be compared with multi-dotters and cleaving rogues particularly for Garalon. I've read it before and I agree that the only real class to class benchmark fight in this entire tier so far is Feng. Single target, minimal movement and mechanics. If you're competetive on Feng, then you're where you should be.
Now, when I look at your Feng kill from earlier:
http://www.worldoflogs.com/reports/r...?s=1026&e=1499
I see a few issues. Flame shock uptime being only 83.4%. On a fight like Feng this should be 97-99% without question. Also, I see only 2 Ascendance uses on an almost 8 minute fight. You should have gotten a third in.
I know there are shaman experts here that can certainly pick apart a log better than I, but those two stick out for me.