Some consumers have encountered problems with the removable pot inside the Presto® Precise Digital Canner, specifically model 02144 07 series. Here is information from Presto®.
“We have recently received a few reports from consumers of issues with the coating on the removable pot of their model 02144 07 series of the Presto® Precise Digital Canner. The 07 series has a new coating that was believed to be even better than the original. Unfortunately, there may have been some issues with the application of this new coating, and in some instances the coating is blistering. In a few, it has come off the pot, and can potentially stick to the sealing ring. Presto® values you, our customer, and feels it is important to inform you of important issues. We ask that you reach out to Presto® Customer Service at 800-877-0441 for assistance if you experience this issue; however, we hope you will be patient. We have just learned of the issue and do not have replacement pots available at this time. We will replace the pot for you as soon as new inventory arrives. In the meantime, you can safely continue to use the pot. If you need to scrub loose coating off, you can without compromising the function of the pot. It just won’t look “pretty”. Also, we recommend that no vinegar or cream of tartar is added to the water. We extend our sincere appreciation to you for your understanding of this matter.”
As stated above, if you are having problems, contact the Presto® Customer Service. They are very willing to help.