Paul from SWISCO responded:
December 6, 2011
Thanks for posting on the discussion board, Richard.
The life expectancy of the Series 600 Spiral Balance is about twenty years. So, it may be time to replace them with new spiral balances. From the information you have given, it appears the correct replacements will be the S600-26 Red Tip Spiral Balances. Take a look and compare them to your original. |