Can't do any more as my sides have split!

I rode 30 miles with engine running well, last night , left the bike for a couple of hours and then back to the sudden death syndrome. Finally started after a lot of cranking. I wagged the side stand ,ignition key and kill switch neither of which seemed to make any difference. I only remember seenig two terminal blocks under the tank , both of which I separated  and WD 'd. This is weird having two electrical issues at the same time.

It crossed my mind that it might be the cdi unit, but I'll wait till coil comes before I do anymore.  A local dealer has a thou so he might be minded to traspose bits over . i've no illusions that a main yamaha dealer would cost me a packet ,
Ignition barrel is ok I think . the key fit is good anyhow.

OK ta interesting
Had another short ride tonight , started of fine running nicely on all four. came back with with cylinders coming and going, I've not taken a plug out yet, but now there is more than one cylinder playing up. seems a ht issue.

Calmer today , I took tank of and pulled apart the white block and another black one. lagged everything in sight with WD "thanks Mike"!. Bike seems to start better. So hopefully cracked the sudden death syndrome. I need to change the coil though, as the first issue was on no 1 cylinder , its better now but still not 100%.  What does the white terminal block connect up?
Thanks all, great forum!

Getting to the point where i'm stumped.  I got a coil from a breaker from a kawasaki but similar.Fitted it,  Engine started up nicely and ran cleanly whilst in nuetral . once round the block and its misfiring on more than one . I took out the number one plug that was previously black now its clean. started again cleanly round the block ditto. seams like some sort of ht breakdown .
In the interim I went to the local garage to get some petrol, bike would not re start. call out RAC , he check sparks , nothing dead, Then  just as mysteriously restarted
.This has happened twice before so the issue may not be related. but now back home bike starts but still the missfire issue.  seems I need to get a Fazer coil, then that is one unknown quantity
out of the equation.  any more ideas guys before I book it in somewhere

Mine is quite noisy, it makes  quite a clang at low speeds it can be felt through the footrests, checked it recently and everything is free  and no tacho code issue.  seems to be working normally
I don't remember this noise in the first season of ownership though.

Whats the individual coil route ? I did not know this was an option on a gen1. the plug cap looked ok but i'll double check

Thanks for imput guys , carb stubbs are sound,  bike has done around 33000 . It is ridden infrequently . its an 05 ,around 10000 miles since I did the ivan mod+boots+ ignition advance+ air pump removal. always garaged. seemed a good spark whilst the spare plug was hung on the no1 lead " with engine running". reconnected still missing on no1. Not done any more yet

Got one on e bay ta

600 mk 1

Just got the thou going again today, besides the exup service, I changed the plugs / fuel filter/ blew out air filter. Seems smoother now. exup still clacks a little,
I need a longer ride to check all is well,  but seems promising. Feels huge after many weeks on my 600

Update the exup seems to working fine ,bike is running better since plugs etc. exup is still clacking, can't remember it being so noisy before?

Got some of  e bay £17.50 inc