2) At one point LeaseRig saved some settings for me and apparently GPU-threads was not specified or saved properly; the result was that when cgminer restarted with the updated config file, hash rates were about 10% lower (and could have been much worse on some PCs!) thanks to the incorrect threads setting, so make sure to include -g 1 (or -g 2 if that's what you want) in your cgminer options and not just in the conf file.
That happened to me, took me a while to understand why the rigs were running slower. Where do I include the -g 2 , you mean as the runtime argument ?