missing part? HELP
 

last oil change i saw these bits of what looked like black plastic in the filter canister receptacle that crumbled when i tried to grab them. i am doing another oil change and noticed that they were actually still there. is there a part missing here? is the spring next to the center outlet supposed to have some kind of cover? i had never looked that closely inside and just popped a new filter in everytime.

i also sprung a leak and i will attach another picture in the next post. i don't know if they are related. i am thinking the bypass was affected? oil pressure was always healthy and above 1.5 bar when hot.

picture of filter canister receptacle:

this is a picture of a tube just back and above the oil sump. it appears to be leaking. i don't know if it is a related problem.

picture of leaky tube: