They will follow up on weight. I would get a good criminal defense attorney now and make 1 visit to establish a relationship. If they pop you the difference will be a swift, quality defense. How to find a good one? Go to the local superior criminal court and listen and wait for the lunch break and ask the court clerks and bailiffs for the heavy hitter. Then listen to the names that keep getting repeated. Go to speak with the top 1 or 2 and speak with them about this and their costs in case this becomes an issue. Then make arrangements for that fee to be EASILY & AUTOMATICALLY paid if necessary and take their card. If this becomes an issue say NOTHING just hand law enforcement the card and ONLY speak with your attorney.
Enforcement is not prepared for someone who has had quality legal advice prior to the problem arising. They also take advantage of the fact that from in jail you can not easily do this type of footwork so do it yesterday! Don't cheap out on this. You maybe able to avoid charges by doing this if you follow your attorneys advice and whatever you do do NOT lie to your attorney.
I like this guys thinking... listen to this.