I know that some have the vulcanized hubs and Yamaha has their Shift Dampener, but you would have to check your own to see what it is. If you have a spare prop, it might give you a better idea. Stainless won't have as much negative affect on the fish as aluminum, so if that is the only non-bonded metal, it may not be too bad. If you have a Shift Dampener prop, it is possible that contact is made when under load. I'm grasping for straws here. You might have to get creative in order to make a good connection.