A lot of the fine thin fins on a used AC unit were flattened.... very flat = they appear to be aluminium. What would be the best way to repair this situation ? Airflow is outward from unit. 99guspuppet --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .