Hi grumpy. I removed the fuel tank from the carby and discovered a little fouling of the fuel pick up tube screen, however the other screen which dips into the secondary tank within the main tank was fouled with rusty gunk. I cleaned the screens as well as the fuel tank, put it back together, but to my disappointment made little improvement to the way it runs frown. See photos below. [Linked Image]
[Linked Image]
[Linked Image]
[Linked Image]