Did you just reuse the old gasket from the previous OC? - Will likely be fine. I guess another option would be to buy another filter and use it's gasket and then keep doing this pay it forward scheme.Hey guys, normally I check filters before I leave Walmart, but in this case I guess I just verified that it was the right filter (and not already used) and went home with it. Unfortunately this was several months ago and I no longer have the receipt, but take a look at what I found when I went to change the oil in the Shadow this morning. Niiiiiiiiice! Check your filters thoroughly guys. We're living in a trust but verify world.
Or just "Nip it in the Bud" and return this one.