I haven't changed the rear main seal. I have bought an aftermarket seal Vinton seal used here in Australia by a well known supplier.
Its not leaking. All I can do is seal the plug.
If the case was a problem with the 574 then I would think that would be from start up.
Yep I'm looking thru rose coloured glasses but I'm backing what I'm seeing.
About to chuck it back in.
Lyndon