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Tom from SWISCO responded:
August 30, 2017
Am I correct to say that your top and bottom are both "wingless" like the 19-002 and 15-001? If so, the balance you're showing is either an S351-27 or an S390-27 with a 2640 or 2650 (we'll get to that later) strength option.
Measure the bottom shoe, as shown below. If it comes out as 1-1/8", that's a Series 390. If it measures 1", it's Series 351. As for the option that I mentioned, here's the deal: your old balance is a 2650, but you can use a 2650 or a 2640. Your window weight is directly between the two weight ranges, so it's essentially preference. If you're slightly below 26 pounds, you might be best off with the 2640, as you noticed. 71 |
