Timothy, We have had problems similar to this in the past and have found bad batches of brightner.(twice) Since you are running three lines and all are experiencing the problem I would expect that the brightner/leveler ratio is off. The bumps or nodules that we had were like little rounded hills and as I recall were themselves bright on the tops of the hills. Check the date code on the product and see how old it is.( it seems that our problems came from batches from summer months) Make up a small virgin bath to run hull cells with a new batch of brightner if this works do a full blown carbon treat and replace with new brightner. I don't want to take a shot at our supplier, but if your curious contact me directly. Thanks and good luck, Chief *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************