Paul from SWISCO responded:
November 11, 2014
Thank you for posting. The bracket looks like our 17-052, which is used for non-tilt window spiral balances. For the tool, see our 75-004, though since you're a professional, our 75-005 might be a better choice. Also be sure to see our guide on how to adjust this hardware.
The noisy balance also concerns me. It may be time to replace it. Depending on the diameter of the tube, you might have our Series 400 (3/8" tube diameter) or Series 500 (5/8" or 9/16" diameter). As for removing the bent clip, you will need to remove the sash, but I worry that you might have a builder's grade window. That would mean that the sash was specifically designed so that it cannot be removed, which is beyond frustrating. You may not have many options available aside from trying your best to bend it back in place.
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