Dude watch my video s !!!
OIL YOU HEAD BOLTS then take off the head!!! The rust fell off of mine, but i think there was definetely some in there!!! Clean it out!! Don't do what I did and blow on it!! Dont move the motor at all. Hope that it is at top and going down. that way when you put oil and draw it down any rust you missed sticks to side.
Use a vaccumn!! I got some stuck in my ring, but got it clear after oiling it out.