Hi Grumpy, sorry about the wait. To answer your questions, yes that is the tool needed to adjust the high/low screws. What makes me think it could a mixture problem is that having a good look around these screws there are some scratches on carby casing as well as the screws themselves. It seems as if someone has forced something in and tried to turn the screws. I used a pair of doctors locking jaw scissors and counted how many turns till fully in, 3.5 on low and a bit over 2 on high. Brought them out to what you have recommended, is firing with choke on but not starting, were as if you hold the throttle fully on it will start but dies as soon as you let off. Is getting fuel and good spark. (think I need to play with the idling screw bit more). When I had carby apart took a good look at diaphragm, needle etc, it all looked good. Have I forgotten something as it feels like I'm going backwards.
