Recommend a workshop in North London?

[baldyguy]

Hate to be a wooss, but I think this one's over my head and what I really need is someone who knows what they're doing - ie, not me.

My elderly (30 yrs) R65 is sputtering and trying to die at about 2,500 revs. Judging by the bubbling liquid coming out of the gasket on the right hand pod, I'd say it's that that's gone. Replacing it's beyond my ken, so I was wondering if anyone could recommend a good workshop, preferably North London way? Or East - Hackney/Dalston that sort of way? Any suggestions much appreciated.

(Hope this is in the right group - couldn't find a more obviously 'right' one.)
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