I’ve had this happen to a Jiffy and a StrikeMaster before and both times were my fault. I either let snow melt and refreeze on the linkage/carburetor or I exposed it to slush or water. It shouldn’t be the augers fault. Since then I’ve taken a little more care not to get water on the power head and I’ve never had another issue. I’m sure spraying it down with lube would help a little.
If this does ever happens again, you can just adjust your throttle manually right on the carburetor. If you’re not sure what I’m talking about take a look at the carburetor and squeeze the throttle. You should be able to see the part I’m referring to move. By moving that part back and forth with your hand you can adjust your speed. This isn’t ideal but at least you can keep drilling holes.
Pretty good rule of thumb, “if you want it to move when it’s cold, keep it dry”