Well, having finally managed to get around to stripping the front suspension I have to say that I am impressed by the fit and finish on the 907ie
. I am sorely tempted to keep this bike now! 
I am not so impressed that I have no evidence that the the fork oil has ever been changed in 22 years and 20,000 miles! There is nothing in the service records and receipts that came with the bike to suggest that it has.
So it was with some trepidation that I inspected the fork internals (Forking Ternals?) but I got a pleasant surprise. There really isn't any sign of wear: Perhaps it's the low mileage?
The only queries I have are -
1.Should I replace the springs while everything is is apart?
Both springs measure 280mm
2. The pre-load sleeves look knackered. They both have a distortion, a swelling at the spring end, which made them difficult to remove from the fork tubes. As a result of the hard life they appear to have endured they also measure slightly different lengths too.
The sleeves are made of some kind of bluish/grey plastic, which is harder than the kind of plastic you get from the plumbers merchants.
I think the plumbing type tubing might be too soft for the job.
I want to do the job properly and I'm wondering whether a metal tube (of the kind I've seen in other motorcycle suspension set-ups) might be worth considering.
I've bought springs from the Hagon company in the UK previously and they have helpfully advised about the correct pre-load sleeve length for their springs.
Does anyone know what the length of the OEM pre-load sleeve is/was originally, please?
I have searched around the forum but I only have a limited amount of free time at present, so any help would be much appreciated.
Thank you in anticipation.
John
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