Accell coils in 3 ohm variety nearly doubles the current passing though the points. It also taxes the condenser and they may breakdown and lose their function.
If you replace the points and condensers with new it may well run okay again. For awhile, anyway. You'll be replacing those much more frequently than with the stock coils.
Advice:
It you want to keep the coils, then replace the points with something like a Dyna ignition. The switches in these can take the extra current.
Cheers,