Motor Service and Repairs

I have a yamaha 115 four stroke which is currently 11 years old and done just on 1000 hours.

Have always had it serviced where I brought the boat from new and have lost confidence in them and the quality of service I am currently receiving.

Looking for an alternative and are seeking some recommendations from fellow boaties. I live north of the river but I am happy to travel south to get good service. I won't mention where I currently go just yet. Boat is in for some repairs as we speak. They have had the boat for almost 4 weeks and are not happy with the progress.