LaBella DTFs sound dull (not in a good way)

[StingRayBoy42]

I just got my StingRay out after not using it for a bit, and the strings (LaBella DTFs) sound really flat, dead and dull, and they feel kind of... plastic-y?

Last time I used it, they sounded fine.

Any idea what could cause this?

Do they need cleaning? Changing?

Any advice welcome.

[PaulThePlug]

Slacken them off and check for twists along the length... might get a quater turn at the ball end.

Quick wipe with some isoprop, lighter fuel... i keep a box of those glasses (spectacles) cleaning wipe sachets...