No power under accelartion

[Kings]

I assume that it is a type 4  engine, a good starting point would be check the balance tube elbows on the manifolds, fuel feed and pressure,float levels in the carburettors, check the accelerator pump discharge. Check the valve clearances, dwell angle and timing, adjust the idle mixture and speed, balance the carburettors with a synchro syn. Refit the vacuum advance tube , some of these run to the R/H carburettor but most run to the L/H carburettor. Carry out the above with a vacuum gauge connected to the balance tube (this also makes it easier when the idle mixture being adjusted.)

Yes type 4, all elbows are good and connected.
Vacuum advance hose isn't connected, but not sure it has been for the past 6 months and been drivable ok. The connection on the L/H carb has been sealed.  Checked the fuel filter under the car and the outlet tube has a kink in it, guess whoever fitted it had a bit of a problem.and bent it have ordered a new one. Not sure if this would be the answer but needs sorting. Have also ordered new spark plugs and leads.  Spark plugs where pretty black, although only 4 months old when replaced.
This problem may be above my pay grade I reckon.