Hello all, Found that my gearbox oil seal is leaking. Has anyone managed to replace the seal without removing engine and box? Assuming it can be done in the car, I'm also wondering if I'll have to remove the diff to extract the prop from the gearbox? it's a Sadev gearbox if that makes a difference, but I think they are the same output arrangement as a type 9. Again glad to be corrected if I have made an incorrect assumption. Any help or advice gladly accepted. Also, on a possibly related note, I am chasing down a vibration that occurs at high speed. Over about 110 there is a reasonably strong vibration through the car. I'm going to get all the wheels rebalanced! But the prop oil seal leaking makes me wonder if there is some vibration there that has caused the leak. Any thoughts? Thanks Tim