Hi all....i have the chance to trade a very good and sound Alpine 640 for a 1988 AC Panthera 440 liquid with reverse no starter long track.....i need feed back on this machine.....i know fairly well FC machine(all Alpine or Nordic 640).....That would be my first liquid......it has 2 rad...one inside the cowling and one in the tunnel. Are the hard to start in the cold??????do they tend to overheat in say.....+4/5 ....ect......Thank you inadvance.