your needle and seat may be leaking,

air leak is the first thing i thought, but the gaskets have been replaced and everything is nice and tight. i'm just trying to elimiate posibble causes, I'm not sure how much the pump flows, not sure if its a low pressure or not, it was given to me. All i know is it is a fuelmiser fuel pump.

sounds like u have a air leak
probly manifold gasket??
tommo

You probably have an air leak into the inlet manifold - sticking secondary throttle, leaking carb base gasket or manifold gasket, split PCV hose etc. Unlikely to be fuel pressure.

Check out WIKI, i'm pretty sure the webber needs pretty much the same as the standard hitachi unit, 2.5-3psi and 450 ml/minute minimum flow rate.

Do you know what your electric pump flows at? is it a high pressure or low pressure pump? if it has poor fuel economy aswell as high idle, then you'll find you will probably need to run a fuel reg, it's pretty much recommended anyway.

Having trouble adjusting the idle on my A12, it seems to run really high at idle and it can't be adjusted any ferther. I have an electric fuel pump but no regulator, Could that be the problem? I'm running a fuelmiser electric fuel pump, the stock mechanical pump stuffed and i replaced it with the electric unit.
Would adding a fuel regulator fix the problem of high revs at idle? what pressure would i need to run for just a 32/36 downdraft weber?