As the Corsair is going to need a bit of work, I got my Rover Wayfarer with Quattro written on it. It hasn't been used for a little while and didn't start. I cleaned the carby but had trouble reconnecting the throttle/governor spring. So now what happens is that the mower starts but you can't turn it off. Regardless of which way the lever sits there is no change in the revving. There is a spring which doesn't seem to do much and I wonder if that is at fault or whether I have re-assembled incorrectly. Have tried different ways to reconnect but no success. Any suggestions?