Just out of interest what are you running for 28MH?
Just about to rent

Renting for the past hour and it hasn't topped 23mh?
asicbeast01 (28mh/s) is running:
11 rigs, each running 3 x 290Xs = 28.05 Mh/s
1 rig, running 1 x 7950, 1 x 7970 = 0.9 Mh/s
Total: 28.95 Mh/s
This should easily hit the 28Mh/s mark, however I've seen it report much lower when using low difficulty coins. I think this may be the way the LeaseRig proxy is reporting back to LeaseRig. I've just asked LeaseRig to take a look at this, and let me know why this happens

FYI, asicbeast02 is actually running ASICs. 50 x GridSeed miners. Originally asicbeast01 was running them, but had to do some reshuffling so if you want asic based miners then check out asicbeast02.
Let me know if you have any other questions!
I've been checking back regularly, and only once or twice has it got anywhere near 28mh. Currently sitting at 24mh.
Difficulty increased from 4 to about 14 in the past 12 hours if that makes any difference?
Edit/ just checked lease rig and again its showing 24.35mh. Just checked pool and on the seperate miner I setup for your rig it shows - 25054kh/s.