My wife found out the pressure gages should be tested every year. We had to replace two that was only going to 8-9 psi, while reading 15 psi. Down here in the lower 48, they can usually be tested for free at the local county extension service (farming and land service information office). We had to dump a years worth of canned potatoes, over 100 jars…
My job is manage the 3/4 acre garden and get the crops to the house her’s is the canning.