Yep...sounds like you overfllled the clearo. Take it off the batt, then blow out excess liquid. The gurgling will stop. As for the tight draw, if your clearo has short wicks, try backing off the battery connection a bit. If that doesn't solve it, I have sometimes had to use a 510 adapter to create enough air flow.
Since the long wick (CE4's I think) came out with replaceable heads, I've had no problems with tight draw.
Good luck! I love my clearos and Vivi Novas!