ORIGINAL: HornetFitter
On the down side, the low and high speed needles are facing down and to the front (propeller), so adjusting the mixture is a bit dangerous and must be done very carefully.
I'm glad to hear that you finally got your new engine going, as most of the times it's just something minor that needs to be sorted out.
Adjusting the carb needles when they are facing towards the prop should NEVER be attempted while the engine is running. I know it' a bit of a hassle having to stop and start each time you make an adjustment but it's MUCH safer for your hand that way.
Karol