Has anyone ever had this happen to them? I just got these new used barrels (had motor oil in them) and installed a brand new Fill-rite FR-112 rotary pump. I cracked the small vent plug on the drum but I guess that wasnt enough? You can see the other drum there and its our old pump on it. That pump was installed on an old drum we have and had it for about 30 years with no issues like that. I dont like keeping that vent open in fear of getting trash and water in. Do you think these drums are made with thinner material now?? What would be a good solution so this doesnt happen again? I can get another drum.