Best thing is an F3 or RS250 radiator! Not the cheapest option, but the best solution!

Make sure there are no obstructions to the air-flow into the radiator, and that there is no damage to any of the "fins".

An NSR should be fine at 32 degrees providing everything is 100% with the cooling system. It gets just as hot (sometimes hotter) in Japan!

Andy.
NSR-WORLD.COM