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@RJBHurst
HIJACK - I have a Concorde with Brain tubes. Not been able to find out much about them. Basically heard everything from 'close to top of the range' to 'basically bottom of the range'. Would be interested if anyone has any real info - or at least something based on fact...
The bike rides beautifully (as, I'm sure the above will!), whatever it ends up being, but would be interesting to know one way or another.