Hello. I’ve been working on a 1968 200. It’s finally nice enough to get outside and put some muffs on it. I’ve attached a picture, and within the red circle, I’m getting some oily bubbles. I’m also seeing oil coming from the holes right above the prop. Does this sound like I need to replace lower unit seals? Prior to muffs, i pressurized the lower unit. It held about 15 psi, so I thought the seals were good. But, I may have been mistake. Thank you.