Originally Posted by John_M_

BTW, I had a miner set back on modifying the walbro to fit the solenoid valve... turns out the Hi/Lo needle spacing is just a bit wider than the solenoid, so the solenoid won't seal in the bore due to the two channels left from the remnants of the original needle ports, one either side of the solenoid bore hole... so I buggered up the first attempt... second attempt, I'm over boring the hole and then press fitting a brass insert to fit the solenoid into.

Thats the only hurdle, not as straight forward as I hoped... then plugging the original Hi/Lo needle fuel feed ports from the metering chamber is easy to do... and then all I need to do is re-drill one feed port from the metering chamber into the solenoid chamber... just need to drill into the chamber at the right height for the inlet to the valve from the side of the carb body, and then cross drill into the metering chamber feed, and then fit a couple plugs to seal off the cross drill holes... Its not an easy DIY, but once its done, the carb body itself should last for quite a while, just have to service the soft parts, diaphragms & seals, etc... it should be worth the effort, I hope.