Had boat motor in for new pump and service and lack of power issue, mech found number one cylinder comp down. went to remove head and snapped 5 bolts and still couldnt remove head as corrosion around bolts. Motor only has 150hrs and 2 stroke scoped bore looks like scored. Question should rebuild or replace with 4 stroke also does not include water pump or repair of pivot bushes
7k rebuild or 15k new 90/100hp Tohatsu other makes not available till January next year