.Head scratcher here: Crusing along motor makes a different pitch. Slow down then it sounds like the hub was spent. Shut off motor, troll back to hill put it on trailer. Get home, run it on hose and sounds like the noise is coming from the upper part of the lower unit. Pull lower unit off, run motor, no noise anymore. I assume it’s the lower unit. Well before I tear lower unit apart, I do a compression check. 120 psi on all cylinders, 356hrs on motor. I’m positive it’s lower unit now, tear lower unit apart and can’t find anything wrong with it. I have another mechanic tell me maybe it’s the tuner. I’m not buying that, the motor ran so nice, came out the hole with a quickness. There is nothing that says it’s the tuner. Check hub, lower unit oil, compression. I guess I’ll put the torque master lower unit back together and think on it. Has anyone else had this issue?