Well, I have just taken delivery of my first Ariel Arrow and these tools came with it.
Any idea what each part does? I can post to you if they are what you need as long as you cover postage cost both ways.

Ideally you need a complete engine with barrels , heads, pistons, gaskets etc to send them, so they can build and check tolerances as they go along. It is a case, you have to take everything apart, to get at the crank seals and bearings before you put it back together. Then they can balance the cran...

The con rod may be ok. Also check the piston where the con rod locates. Often if movement is left for any length of time, the alloy piston can wear, so after you have gone to the expense of rebuilding it, the movement may still be there. Also, modify the piston by drilling 2 small holes, this way oi...

I have always used 2 stroke Dellorto carbs with 4 stroke atomizers, personal preference for racing 2 strokes. The nozzle in the venturi (where the needle rests into), can be flat/angled/flush with floor of the venturi, depending where you want the mid range power. The needle choice can be critical a...