I have a reliabilt French door I purchased from Lowes and installed 2 years ago. The side jams even though I primed and painted them before installati on, have rotted at the very bottom next to the sill. The adjustable sill sc rews have seized and wont come out. I looked online and called and it seems impossible to just find the top adj ustable part only. I really do not want to replace the entire threshold as this door is only 2 years old.
Is there anything I could fabricate or otherwise to just replace the adjust able top part? It looks similar to those adjustable oak thresholds but is a tan plastic.
Any advice is greatly appreciated!