COIL BALANCE SHOE

A landlord from MASON CITY, IOWA 50401 says:
October 8, 2010
I HAVE A 740 COIL BALANCE SPRING BUT MY SHOE IS SHAPED DIFFERENTLY THAN YOUR 15-180, MINE HAS A TOOTH IN THE CAM, STRAIGHTER SIDES AND NO HOLE OR VOID IN THE CENTER OF THE SHOE. OVERALL SIZE IS SIMILAR. IS YOURS A REPACEMENT FOR MINE OR DO YOU HAVE EXACT MATCH IN YOUR DISCONTINUED BIN.
ALSO DO YOU HAVE A KIT WHICH INCLUDES SPRING,SHOE,DOUBLE SUPPORT DETENT CLIP AND OTHER MISC ITEMS TO REPLACE BOTH SIDES OF WINDOW AT THE SAME TIME?

bottom at the widest part 1 1/4"
bottom of white plastic 9/16"
knob on side across 11/16"
curved part on bottom to top of white 1 7/8"
User submitted photo of their coil balance spring.
Profile picture of Mike
Mike from SWISCO responded:
October 14, 2010
Please take a look at the Swisco 15-180 Coil Balance Shoe, this should work as a replacement. Also, the spring appears to be the Swisco S190-740 Coil Balance Spring.
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