Very true wyndhy... fill in your cracks with caulk. But trim needs a good nailing, I mean really pounded good. Right after is when you want to get some good wood filler in there as well. Some people would go as far as to put a gloss coat over the trim.

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Put me on wheels and I'll turn tricks.

Clever? Nah, I ran out of that years ago. But if you find this, let me know, k?
"The road goes ever on..." ~ Tolkien

In memory of my friend skip...
Go then, there are other worlds than these