My name is XXXXX XXXXX X am an authorized Dometic service tech and I can help you today.
Is this on electric or gas when it gives you the gurgling?
or does it gurgle all the time?
If it is gas that you need, recharging the unit can become very expensive. And to be honest with you, If there is a leak in the system, that could cause the gurgling in the first place, if you recharge the ref it could last only a couple of months or it couple last a couple of years.
Just want you to know that before doing anything.
If you are interested or just have more questions please get back to me here and I will help you more.