My house was built in 1930 it still has the original wood double hung weighted sash windows. However, over the years metal and vinyl jamb liners have been added (the weights are still active with the metal liners but are not with the vinyl liners). I broke one of the vinyl liners and I can't seem to find a place that sells them. Do you have any suggestions? I have exhausted all local hardware and lumber yard possibilities. I have been looking online but it appears that my only option is to completely replace the sash or have it retro fitted. Any suggestions?