Water in a drywell

legular

I've got a Weil Mclain Gold Plus 30 hot water tank that was constantly calling for heat and putting our water temps at around 160F with the dial at the lowest setting. I replaced the aquastat on it and when I was plunging the thermostat bulb into the drywell a second ago, I noticed a wet gurgle sound right when the bulb touched the end of the tube, and then when I pulled it back out there was some moisture on the bulb.

For now, I have the bulb pulled a little higher and it seems to be working fine. But how much a of a concern is this? It's called a drywell for a reason, I'm guessing.

And for reference, I think water got into the aquastat housing from a faulty bleed valve located on top of the unit to break it in the first place. There's a chance the water in the well is from that.