OK my fork'd miner isn't cutting the mustard.

So here's the one i'm going to recommend using for my pool.

https://github.com/Encel-US/cpuminer-multi

It's not mine, but it's working fine and getting slightly better hashrate than built-in miner.  
I get 8000 hps with built-in miner,  8800 with Encel's cpuminer fork.