Thanks for sharing that Lucky Strike. That would be a plausible reason for the OP's overheating for sure, and would explain why replacing the thermostat and cap made no difference.
Hi all its been a while So as it sits the local Honda motorcycle shop didn't change my thermostat they ripped the guts out of the old one yet they were kindly enough to charge me a new thermostat and 3 hrs labour. The bike has now a new owner and the bike is in another shop at which they have found a blown head gasket a bad radiator cap and the thermostat. Thanks all for the responses Stay up right