My guild is currently pushing H Rhyo as our second heroic 25 kill and we seem to be hitting a road block. I will try and give as much info as I can without wall of text crit. On our good attempts (which have been a 1% and about a half dozen 5-6% wipes) we seem to always hit the superheated mark right on transition, a couple seconds before, or a couple seconds after. We definitely know we are not getting him transitioned soon enough, however when we try and make changes to maximize add dps to down adds quicker so we can help focus down legs we seem to invent new ways of wiping. As our guild ranged officer I try and change who I want staying on fragments and who i want pushing the sparks and I'm afraid I have run out of ideas. We currently have the ranged dps switch to spark at 4 stacks, I have locks not switching to make sure fragments go down and 1-2 SV hunters staying on frags as well. We do not touch the 4th spark and we blow hero to try and transition to p2 as well. I think we have been calling for the all out switch to legs when 4th add spawns, would it be better to call for it once 3rd add dies? Our comp can vary (as you will be able to see from logs) but usually we can run with 1-2 locks, 2-3 hunters, 1 SP, 3-4 mages, 1 boomkin (2nd usually as a sub), 1 ele, 2 furys, 2 rets, 1 DW frost, 1-2 rogues, 1 kitty, 2 tanks (pally/DK, and warrior). We do have some flexibility as we have a good number of ranged sitting.
http://www.worldoflogs.com/guilds/6811/
We usually use Tuesday/Thursday as nights to put attempts in on him. I guess I'd be interested in advice concerning our ~5 min long wipes as those are our best attempts. I'd love to be able to come to the RL's with something fresh as our entire group almost looks at this encounter in a pessemistic point of view which can be disastrous to progression raiding. Any and all help is appreciated!