Won't run

So I could not get the engine to run this week end !
Plugs were pretty black from last week's run, I removed the carbs and adjusted the butterfly on one of them as it was always letting air leak through making the adjustment impossible.

Now I redid the advance setup as 6 BTDC static but I am wondering if the little hole on the pulley stands for TDC or 6deg BTDC ?
Can't get the engine to run and have suspicions around the whole ignition system since the plugs usually smell of gas when I take them out. And the plugs I was using are nit the correct type.

Next steps :
- New plugs (champion 9YC), rotor, distrib cap and coil
- or maybe a genius idea
-  start to sort out the dashboard or do some bodywork to take my mind of this crazy engine start issue. Bodywork therapy !

Engine ran tonight

So i did a few things and got the engine to run for 30 minutes :

- cleaned the plugs

- redid the setup for the timing and breaker gap, one of these is probably what helped although the tachmeter I bought is giving erronous readings so it's tough to check correctly. But at least i have the stroboscopic light and i can take readings. From unplugging the vacuum tube it looks like both the weight and vacuum advance are working. I am reading 28 degres on the flywheel at around 2 or 3000 rpm, is that too much ?

- After much time trying to start with every combination of the chocke I could finally get the engine to start properly and move on to try to setup the carbs a bit better and that's where i could not make sense out of it anymore.
First my idle is high and on the left side even with the idle screw out it was still high. So i wonder if that's due to an air leak or the mixture ?
Then adjusting the jet nut on the left side made no sense, whatever i did (tighten or losen) the engine would still slow down when i lifted the pot.

At least when warm the engine would not die anymore like it used to when i accelerate.

Got a few actions to do this week :
- ask the excellent triumph experience forum for some ideas
- looks at the plugs, between the front or back ones and see if some are black
- see if the engine starts easy like it did when it was warm.

There is hope !