I helped a friend install bobs solid motor mounts on his 1991 Merc 200 EFI. Ser#OD068759. When we installed them, we put the long side towards the boat and the taper side towards the prop. Everything thing went in ok,but the exhaust plate would not sit flat. The passengers side was tight with no gap and the drivers side had about 1/8 tap. We took he plate back off and cleaned the surfaces. Still did not sit flat. It appeared that the diameter of the mounts are a tad too large. I Watched a YouTube video and the guy who did his said his plate did not sit flat either until he torques the powerhead down. We went against my better judgement and put the powerhead on. The gap did disappear but when we started the motor, water was leaking from both upper mounts. It was kind of squirting out. My next step is to pull the powerhead back off and turn down the diameter of the solid mounts on the lathe. I’m assuming the plate need to sit flat and even. We did replace both gaskets with new quicksilver one. Anyone else run into any problems installing solid mounts? Any advice is appreciated.