380ACP Magazine with Grip Extension, 7rd, CW380, P380

I've bought (and regularly shoot) a dozen total Kahr magazines - the 6 round flush bottom magazines for my CW380 and also these 7 rounders w/ baseplates. Out of the box, a couple or three simply would not function due to internal stickiness, and it looked like dried dark brown goo spread inside and out. [Some sort of Cosmoline treatment for long term storage.] As far as I'm concerned, and I'm trusting my life to my Kahr, each magazine I've bought gets disassembled and all of the parts scrubbed with a good CLP-type solvent/lubricant. Especially the insides of the magazines where hard-to-remove dried brown grease seems to accumulate. And I make sure the springs gets wiped down and re-lubricated. Then they run like clockwork. Zero problems at the range.