We would olove to help out more. Though on a 1994 model used, the variables are many. We would again recommend a 25 Pro Series propeller. Most Yamaha dealers can tell you if you have one now. We have not really run anything expect this prop on the Yamahas. It has worked well for a nubmer of years and we see no reason if all is healthy, it would not on your rig>? No you should not have bought a Stratos, We dont need to compare horror stories and CS Departments. Willing to help, just not sure how?Step one, find out what you have. Step Two, we go back to another option. Serial number on the boat and history on the motor itself? BCB