Hi El_burro,
Just asking a load of general questions here, so people get a better idea of your problem,
Starting at the beginning, in case I missed something, You got the Gunson I guess because you have a problem you could not resolve? and how did this problem show itself 'before' you could see the plug colour on #1
What colour are you seeing on # 1 , Orange ?
Regarding plug colour, do you have 3 plugs that look normal burn and one sooted up?
Just double checking, when you say carbs synced, I guess you do mean with gauges and not just bench synced ? Are you bench syncing first? I guess so.
With the idle jets out one turn, do they gauge sync up ok or does the engine not idle smoothly ?
So are you saying you have raised the needles, was that to richen up because of the pod type filters?
You changed the main jets? increased them in size or just replaced them?
What brass bits in the carbs now are still standard Honda and what are from a Chinese carb rebuild kit?
Do you set all the air screws to the default 1 out positions, then sync the carbs with then check with the colour tune and it's not blue on #1 ?
Are you saying you have to turn out 2 -3 -4 air screws further than 1.25 turns to get the blue colour? Is this after you have synced them you alter the air screws again? which is leaning it up, so is the Gunson colour very orange before you start then? Where are the needle positions now, what size jets are you running in there?
Where is your carb vent tube located?