Tolsen, Just dropping the shaft out of my RX4 and I can see that it's the vibration damper at the rear end that's flapping about. Everything else looks 'as new', but once it's out I'll check it all thoroughly. Did you just 'inject' silicone around and between the bits? Just ordinary type from what you've said. And how long did you leave it to set for? Have to say that, any problems apart, these things are constructed :like the proverbial brick-built-sh*t house!
Is this the bit you need Avroff