Hi I have 2 Virago´s, a 92 with a stainless system and a 96 with a normal system. Now whilst the both run OK the 92 with the stainless exhaust glow red hot when running. Both front and rear. The bike runs OK and I do realise that these are supposedly lean burn bikes, and the plugs are the right colour, but red hot, ouch in more ways than one. Is this normal can anyone say please.