I have two storm king units that measure 9 1/2 inches in length. Are these units the 440 or are they some obscure one of a kind. Will the 440 replacements with the 9 inche lengths work??
thanks

If you need to lubricate the closer, I would spray the rod that comes out of the back end of the closer. However, I don't believe that your problem is that the door is having trouble closing; if anything, your door is closing too fast. Now, you said you turned the adjustment screw on the end of the closer. You said you loosened the adjustment screw., but you should have to tighten the screw to slow it down. Turn the screw clockwise.