I first noticed the creaking door seals last summer, but it disappeared once the wetter weather arrived in Autumn. Well now it's back again - just noticed it after the recent heatwave, but after the last couple of days heavy rain, it has gone silent again. So I assume that it's related in some way to the rubber door seals drying out. I have read posts about this as being a common problem, but don't recall the mention of a solution. Does anyone know what would eliminate this? I don't want to experiment by applying anything to the rubber seals in case I make it worse. I've seen a product called Gummi Pflege mentioned in posts - would this be a benefit? I do have a dry silicone spray which eliminates friction which may or may not work? Any advice appreciated.