bosch platinum II's and i didn't check the gap before i installed them, however i haven't had any problems in the passed 3000 miles, as i installed the cap i did notice the rotor cap had a small crack in the top of it, didn't appear that it would interfere with any connections though

as for idle drop, nothing like that, that ive seen, only idols slightly higher then normal when its cold and then idles normally after it warms up