One for you engineers and DIY bods. I am trying to remove the filter on my FIL’s washer/dryer. The cap unscrews but the filter doesn’t as I assume it is jammed. There are two lugs on the filter but there is no space to grip them from the outside so what I am looking for is something to grip inside the lugs. Something like inflating a balloon inside a jar. Difficult to describe and I don’t have a picture. It is all plastic If necessary I think I could use force to unscrew it but it would probably be damaged. Probably needs a new pump anyway.