My supplier CCS Medical says there’s a shortage of auto-soft 30 infusion sets, so they are sending me the auto-soft 90, which are not so easy to use. Has any other supplier experienced such shortages. CCS Medical says they don’t know when they will get the auto-soft 30s. I have already had two of the auto-soft 90s malfunction when I tried to insert them; they did not fully inject under the skin. Thanks for your responses.