Spiral problems in less than two years

Thank you for contacting us. I'm sorry to hear you're having problems. Can you specify exactly what the issue is? Can you also tell me the weight of the sash, in addition to the size of the visible glass (height x width)? Thanks!

Thank you. Based on this information, the hardware you ordered should be working normally. Just to clarify, you mention only two windows are having problems. Are the other windows working well?

One reason the sash might be hard to move could be that there is too much tension on the balance. You should only need to turn the spiral clockwise two to three times. The pivot lock shoe could also be hanging up on on the window. Finally, try some silicone spray on the track. That might help things.