Hi Vince, well it says Marcus on the top of the carb body. As dad said, Terry Brooks' Scorpion was so easy to drive in comparison to ours. Plenty of power, you could easily start off in 3rd gear (a no no in ours), take your foot off the throttle at junctions, the clutch disengages and you just select whatever gear you like to start off again.
With ours it just isn't quite there, as dad said he'd feel a lot more confident taking ours on the road if it ran better, if you could tell us the location of the idle screw I'd appreciate that, as it needs turning up a little. If you feather your foot on the throttle it idles okay, take your foot completely off and it stops. That's the main problem at the moment, getting into forward and reverse, and having to select 1st gear whilst also keeping your foot feathered on the throttle. We've got an engine to collect from Marcus Glenn soon so if push comes to shove we'll just swap the carbs over.
Regards, Lewis