So I changed my oil and spark plugs last night as the guys and I had a garage night. Cleaned the oil screen as well. I went with mobil 1 oil and filter as that all that I run in my cars as well. On the way home I now have a new noise. On decel only sounds almost like piston slap, a definite knocking sound that seems to be in time with the exhaust note. I am going outside to listen some more here in a few minutes after I give the neighbors a few more min to wake up. Ant idea's on what happened? I am thinging I might have chose a thinner oil than the PO the mobil 10-40 motorcycle oil. and maybe I am hear semi normal noise now but it sure doesn't sound healthy. No noise at all on acceleration no deep knocking like a rod knock would be. only on decel doesn't matter what gear or even if I am sitting still same noise. Almost sounds like something is dumping air out. I did do the gas guage fix at the same time so I need to investigate up there too.