Took the instruments off today. Nuts, washers and inside of chrome backs are badly rusted but retrievable.
Now there has definately been something living in here. Looks like a silk worm.
Chrome backs are not too bad on the outside.
But on the inside . . . . . (lost one of the retaining nuts - poo!)
Not nice.
Now I suspect that the silk worm is responsible for this stuff on the speedo lens. This is good news as I will not have to replace it . . . .
But I will still have to get in there somehow. I saw a video on YouTube some time ago about how to replace the glass. Looks like I will have to prize this retaining ring off - without damaging it. Fat chance!
