When I first unpacked the lens, the barrel was tight and turning the zoom ring made a squeak (I assume from the weather seals). Now after four days the zoom ring turns looser, no squeak. And the lens barrel is a bit of wiggle notably in the up/down direction. Anyone else's like this? Maybe mine was extra tight when I got it but the wiggle worries me a bit after only four days. Nothing bad for a $200 lens but seems more than I expected. I would be curious to know what other owners are seeing.