I don't see how 3 grams is anything to worry about. Some of the old systems were tracking at 10 or more grams.I like to track at 1 gram myself but will boost it up to 3 on a bad record just to keep it from skating.
I have a web page about this topic. see:
http://dvautier.home.comcast.net/lp/lp.htm
also
http://dvautier.home.comcast.net/audio/audio.htm