I'm setting the AFR (air fuel ratio) on my Karizma. After my relatively new bike stopped by the road side from a fouled spark plug, I realised it was running rich and turned it down from 3 turns to 2.5 turns. In the past my bike(which had been adjusted for AFR by a mechanic) would maintain more or less the same RPM even after the engine got a bit warm. Under the new set up it rises from 1250 rpm to 1500 or so after a long drive in traffic. Have I messed it up? As far as I can tell it doesn't misfire/no gunshots, when coasting down from 70 kph so its not lean so it still too rich