Tea partiers need to be sure to get to their state conventions and take the policy makers out at that level. Its where your RNC committeemen are chosen and usually only a few hundred votes are enough.
In Michigan only about 1500 total votes were cast but a coalition of tea partiers, libertarians, and GOP conservatives removed uber RINO Saul Anuzis from his national committee chair and replaced him with conservative Dave Agema.
It costs real money these days to run for national committeeman, about as much as city council or state legislator in a small state unless you’re real creative.