Replace window parts
A handy person from Boothwyn, PA 19061 says:
March 31, 2014
I have Weather Craft Tilt Poly-Tex vinyl windows, the parts are starting to go on some of the windows. I've attached some pictures. It looks like the coil balance shoe is your #15-141. Look and see what you think. What coil balance, coil bushing, coil bushing cap and coil support barrel would go with #15-141. Thank you for your time.
Paul from SWISCO responded:
April 2, 2014
Ah, I think I recognize this balance. If it is what I think it is, then the manufacturer has discontinued this Series. They recommend replacing it using our Series 150 coil spring, 15-140 shoe, 15-143 and 15-155 bushings, and finally the 15-144 bushing cap. Review this hardware and see what you think.