| Arh how long did I try for mate. I even left the caliper hung up to by the seat for a week!
The only way I managed it was to drill a hole in the little resevoir cap and modify my "Easy Bleed" kit. With about 10psi in the tyre it blew the air right out and hey pressto a brake. Then off to JHP to buy a new cap for a few pence.
Hope this helps as I really did try every method I could thing of | 
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