Hey everybody, this is my first post here and I just became an AHA member. I was wondering if anyone else has run into this, I bought second-hand equipment from a coworker including a 9 gallon brew kettle. When I tried to boil water as the water reached boiling it started shaking like crazy, and I had to switch it out to to a smaller one for my last batch (I'm using a standard electric stove burner). My problem is I'm about to do my first all grain, a Kolsch, and that little pot isn't going to cut it. Is this pot warped or is it too wide for the electric stove burner I'm using? The bottom of the pot doesn't look bent or eroded. In either case this will determine whether I have to go buy a new brew pot or one of those outdoor burners (I've been thinking about getting one anyway). Thanks!