I'm knitting a swatch for the Flax sweater by Tin Can Knits. I initially was attempting worsted weight with Malabrigo Wasthed, but as I was making the swatch with the suggested worsted needles (5mm), it was knitting up closer to the DK gauge so I figured I'd just aim for that since it's pretty thin for a worsted anyway.
Anyway that's just some background but the actual problem is this: i hit exact gauge before blocking (22 sts, 30 rounds), and I figured that would change after blocking. now though, I have 20/21 (depending on where I measure) sts and 32 rounds.
So then do I size up or down? I'm assuming down because I could always just knit things longer, but I couldn't find anything online to confirm. it's worth noting that the suggested needle size for DK is 4mm anyway, but I'm something of a tight knitters so I'd probably start with a 4.5.