I'm chasing one of the hub caps for this model, the orange part in the photo. Does anyone have one spare?

I'm also having great difficulty with the carby.
Cleaned it all out with the ultrasonic cleaner and got the fuel primed etc, however it won't fire. I have spark and compression. It did blow smoke a few times but I've had zero luck for some time now. I've reset the Jets as per instructions but not getting anywhere.
Very frustrating.

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Doug