I need help selecting tip colors for two (tilting) window applications. All are 900 series spiral balance but stock balance have no color tips.
1) 29 in Long, 3/8 inch tube, for a 25.5 lb sash.
2) 23 in long tube, 3/8 in diameter, for a 16 lb sash.
Also, approximately how free should the pivot shoe ride in the aluminum rail. Mine require about 3-5 lbs of effort to slide up or down, and wanted to know if this is normal, or do the need replacing, cleaning, or lubrication, or nothing at all?