I've fixed the gears already & they're now changing perfectly. I knew they would be easier to adjust than derailleurs but I didn't get just how easy they'd be. Excellent.
Yeah, I know what kinda speed to go at and we often get the Mistral here so when it's blowing the air cools pretty well. Some days though, when it's calm, it can hit 40C and to be honest, I'd rather just not go out. Thank God for air-con.
Thanks for the tips.