With my 4 boxes I can do a steady and predictable 0.1btc with my 4 miners. On here the last few days i'm lucky if i'm getting 0.05.
Am I missing something?
Zach's monitor can show you what we've been earning over the last day, week, month, etc... Things have been somewhat erratic over the last 7 days.
https://ckpoolmonitor.zachmonroe.com/Another question I have is with a machine that finds a block. Does that user get a larger reward or what happens?
No, we're all in it together

You get your fair share.