Mine did the same on the extreme sun side. It's partially my fault for not keeping them treated but as CO said the OEM seals are junk.Replaced all of mine this year and will keep them treated since the cost with wiper and "D" seal was $6 a foot.
I'm currently looking at at rear kitchen for one good reason that I read on another forum, fire. The most likely place for a fire is the kitchen and a rear kitchen is far from a mid entry door.