Casey from SWISCO responded:
September 27, 2017
Thanks for your detailed information. Since the numbers stamped on your channel balances do not identify which balance you need, I am going to have you take a look at both our Series 351 and Series 390 channel balances. Depending on the measurements of your bottom, nylon balance shoe will determine which of these you will use as a replacement. If you should need any more help, please let us know.
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