@hinorth sorry for the delay.
I was more asking about where you lived? As in, if you were close to the Ottawa area I could recommend a few places down here.....
However, if the boat is up at Kipawa then here are a couple local suggestions:
In Kipawa proper go see Boucher Marine, he wrenches on boats (or used to anyhow)
If you don't mind trailering to North Bay Idyltime is really good IMHO
And lastly, if you really don't mind doing this yourself then here is a good video (this is for a Mercruiser Alpha drive):
https://www.youtube.com/watch?v=-s_tgevX2aIGood luck, I hope you get it sorted out.
Have a great season!