How soon do you have your controller set to add fuel? If you're adding any fuel below the clutch engagement point, that could be part of your issue.
Your motor doesn't need any additional fuel at idle, so leave it at stock fuel settings until the point where the engine actually starts seeing a load, then bring the additional boost fuel in.
Also, the above posts are correct as well, so be sure you're letting it warm up if you start it.
I'm running CR10's on both my blower sleds, and haven't had any issues.