Hi 57ratrod,
Not too sure which GO-Tech engine modified by EB Mods you are referring to, but lets see if we can help to get you in the ball park with your carb settings.

My "Massive Mods" MG66 is a modified ·21 5 port GO Engine and it has the 2 needle composite carb with standard 8mm venturi insert. With this type of carb,
set your idle gap to ·7mm with the 'Idle Set Screw', the one in the carbs composite body, then rotate your LSN 1 full turn in from flush,and leave your HSN set to flush.
Start your engine and warm it up, then put the buggy on the ground and gently drive it around to get the engine and chassis up to track running temperature,
circa 110'C/230'F. This is where you can then 'Fine Tune' your HSN for top end performance. After you have a good top end tune, you may want to re-visit
your LSN if your idle is too high. Whatever needles you adjust for best mixture settings, do not alter your 'Idle Set Screw' or you will chase your tail forever.
If your engine is holding a nice steady 'purring' when you pull the buggy to a standstill, but you can see your clutch is trying to engage,
this is the only time you would want to back off your 'Idle Set Screw' and by no more than 1 twelfth (1hour) while the engine and chassis are still hot.
1 more lap around the track, pull up to a standstill and all should be good for you.

The top GO Engines "Guru" and another friend of mine may pop in with their input, but meanwhile I hope my suggestions will help you 57ratrod.




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