Ian,
Hmmmm.

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.sounds to me like there may be a dragging clutch or perhaps something's amiss with the gear lever cables.

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Clutch first.

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If it's dragging slightly that's enough to load up the gears and make the idle shaft spin while it's in between gears

- both things that make gear selection difficult.

The thing is though if it's dragging slightly then the bite point may still be in roughly the same place.

I'd be tempted to flush through some new hydraulic fluid and see how it feels after that.

Gear lever cables.

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.I'm not overly sure about this at all

- I've never heard of it, but I wonder if while the car has been laid up some moisture has worked its way into the gear shift cables and caused some corrosion or similar

- perhaps they're a bit stiff and not transmitting all the movement back to the gear selector forks

- this may make things feel nasty too.

Cheers,
Si.
