My bowthruster prop has some play in it between the shaft and the prop is this normal or is my shaft or prop worn? The prop can be wiggled back and forth approx. a 1/4 inch or so.In addition to replacing the foam seals I found that the metric seal 30x42x7 behind the prop needed to be replaced.This seal keeps the oil in and water out, it is a single lip seal I will try to replace it with a double lip.I should be able to find this seal locally.Since you can not check oil level or for water in the thruster I will in future replace this seal when I replace the foam ones,cheap insurance.Shenanigans/SM 123