Just popped the centre part of my DeDion to replace the split gaiter. As it was leaking a lot of oil so I got an oil seal. And that was my first error, there are two! Would have been nice if the place I ordered it from had a comment that two were needed. So I'll have to wait a couple of days for a second to come in the post. But will give me time to paint it all up. But the second problem is how to change the oil seal at the end where the gaiter is. Seems to be held in place by an odd metal sleeve. See pic. any ideas how to get it out???