yes single i have just been out and taken the idle jets off and they look very clean but i did clean them anyway i really do think its the settings on the carbs but i dont no how to set them up not a clue 

the reg is before the fuel pump

Regulator should be after the pump not before as you are controlling the pressure into the carbs, not restricting the flow into the pump

I believe it should be 1.5 - 2.5 PSI

will refit tomorrow and see many thanks 

Regulator sorted , took the fuel reg off all is back to norm (default) did timing still the same, did plugs still the same, checked ht leads and coil, tried to do the rich settings but still no ider why this is still doing the same thing  jerking at constant speed in each gear going to give up soon driving me mad

needs an engine tune up and carbs resetting from scratch.  I am 30 odd miles away and prefer cars here as going mobile I often need stuff that I left at home or could not carry,

basic carb setting is on linkage off to separate them.
idle speed screws out clear of the stop plate then in until they touch + 1/4 turn
mixture screws fully in gently till they stop then out 1.75 turns
then it should start and run
if too slow both speed screws in another 1/4 turn
at this it should be drive ok but need fine tuning on mixture and speed

[WILL]

I am 30 odd miles away and prefer cars here

@Rob,
Let me translate that for you . . .

Find a way to drive 30 miles and get it to Snoopy, because he WILL fix it   

Or buy a book

i will try and get up there in my next 4 off i work shift so next off will be Tues to Friday next week if you send me a phone number i will ring and arrange .. email - robertevans794@btinternet.com many thanks life saver  or further down the line

i ve found your number i will ring you in my next 4 off many thanks