[dunedin]

Can anyone help..
I have just bought a '82 911sc coupe and it runs great when motor first starts out. I can drive it for 10 miles and everything is fine. Stop and start again and it acts up with low idle and slow accelleration and during long hauls. Could the problem be that the distributor advance is sticking? The car was only driven 500 miles in one year, could it be bad gas? Or could it be a simple adjustment of the fuel mixture? Has anyone had this problem?