Just fitted the trispark ignition on my 75 Commando. The bike already had the 4 brush starter set up and fresh Amal 932's. The bike now starts so easily that it is disorienting. After warm up a quick tap of the green button brings the motor to life. When cold this MKIII still starts much easier than my 2004 Bonneville. I just ordered another trispark for one of my other MKIII's.