I just had to do this on a new lid that was out of round and would not even fit on the bowl. I removed the handle and rested the lid upside down (since you can’t remove your lid handle, you’ll have to improvise, using a towel on what ever surface you use). I Used a tape measure to check edge-to-edge from 12 o’clock, to 6, then from 3 o’clock to 9. Gave it a gentle squeeze on the wider of the two measurements, it doesn’t take much pressure at all, and checked it again. Repeated. Got those two measurements even, then turned it 45 degrees and did it again. That did the trick. Check the bowl as well. Hope this helps and good luck.