Likely just some residue getting in the works and gunking it up. Just give it a good long soak in warm soapy water, it should clear itself up.
I'm not sure of the need to wrench the gillette adjustables closed for every shave. If it feels secure that should be enough. It seems more like it will early break it.
I did give it a toothbrush scrub under some warm running water with some dishwashing soap after I got it, then I hit it with some MAAS. It's soaking as we speak.
Likely just some residue getting in the works and gunking it up. Just give it a good long soak in warm soapy water, it should clear itself up.
. . .
The quarter-turn that is often mentioned is misleading. The distance you have to turn to lock varies with the setting. At least on mine.