rubber tubeing on the shaft of the screwdriver will stop a nasty supprise
head torch as said allready as seeing the bloody screws is a pain and i think the hardest part of the whole job.
i use a long stright screwdriver with out issues but i can see how a bendy one would be better
i also do it with the tank proped up, i have a broom handle cut to length. this dose restrict light so again a good torch is a must.
take your time and its not a hard job, just can be a little frustraiting if you cant find the screws, mine were covered in crap so took me ages.... even now affter doing it 3 times i still have a hard time spoting them. i have heard ppl paint the screws white affter the first time to help from then on. i keep forgetting to do it.
as for the caps, i find them easyer to get to from the sides and have replaced my caps with the carb crossover tube mod. this makes it even easyer.
oh and dont aim for 100% perfection on the carb tune lol i spent 2 hrs the first time i tried to get it perfect and you wont tell the diff from 100% perfect and being a slight variation (cant remember the tolarance thats normal but sure some one will know)