It's not corrosion (suprisingly

), previously mine was an auto, and some autos have a different bracket in this location (but not all apparently

as I have only heared a few people mention it as an issue during a swap).
Anyway, when I did the auto manual conversion 8 years ago, I bodged the existing bracket to work, but its not really ideal and I want to do this properly when the gearbox is off (which it is now).