Yeah I just cleaned mine out to well hopefully it was oil not getting to the top and making the noise but other than that extra o-ring at the bottom which I thought might have been restricting it.. and I left out I cleaned mine like yours it's funny you know that the knuckles. Would have an oil line like that and then which to me is better that's like the old triumph motorcycle you go up you sprout to both heads where on the shovelhead you go to the back and then it has to work its way to the front the oil...