OK. Send that with a copy of the Summary and Amendment from the interim rule, and a copy of the proposed rule to your Congressmen. Write a nice cover letter explaining your concerns, and point out that the interim rule specifically states, in fact starts out with "there are no limits". Also point out that the limits are PROPOSED and were posted in the federal register 3/10, AFTER the warning letter was issued. So how can you exceed something that is only proposed and does not exist yet? And how can you legally be penalized for following existing law?