i would ring wim too,
i have just measured the bearings but i dont know how you say the sizes so i'll say it my way, lol
inner diameter of hole in centre of bearing measures 3.92mm
outer diameter measured with my digital calliper is 6.94mm
the thickness of the bearing is 2.42mm
so i'm guessing its these,
http://www.rcbearings.co.uk/index.ph...product_id=199
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