Anybody changing out their internal zinc anodes on their motors? Reading up on them online. I called a couple of the well known marine repair shops in the Seattle/Woodinville area who said they don't check or bother with them unless there is a problem ??? Sure we flush our motors with salt away, (or something like it). But unless your motor is up to temp and running so the thermostat opens the flush won't reach the other side. Saw some cruddy anodes on YouTube. I thought I was doing everything correct....now this. I've got Yamaha 200 & 9.9.....anyone want to chime in with their experience?....Thanks