Constant Forcee balance system
i have 3 windows i had installed 3 years ago with a 3/4 inch constant force balance which are 32 x 54 in size ( double hung). from day one the top sash would come down rather easily when closing the bottom. my installer said thats just how the manufacturer adjusted the balance tension. is there anyway to tighten/ adjust the tension of the balance so the top doesnt come down so easily?