I wasn't trying to be rude, but taking the plunger out 1. Ruins the seal and greatly increases the risk of a blow out. 2. It also lets any particles germs etc. enter while you swap back and forth.. I've been running for 20 years and have never had a problem with injections. Just the pinz your use too bro and rotate injection sites to allow heal time like RADAR stated....
Peace, Forged