It's anyones guess at the moment as to fuel starvation or electrical. I've replaced most components in each system; intank and main fuel pumps, Distrib cap and rotor, plugs, leads. And cleaned up whatever else I can put my hands on? But not making any difference to the problem (stuttering at idle and on the road at around 1500rpm or going up hill). But at the moment to me it feels like fuel starvation? But whatever or where ever the prob exists I haven't put my finger on the source. Getting lots of help from SS4 and others. But feel free to join the party.