All of a sudden my Austin Tilly wont start. I stripped the simple carb and blew everything out, fuel pump is pumping up to the carb no problem. Seems like a very weak spark at the plugs, so I replaced the 2 x 6v batteries (12V system) for two brand new ones from Shield. Also replaced the dizzy cap- leads- suppressors- points- condenser- rotor-plugs and retimed the ignition. . Still spinning over but won’t start. I tried another coil but I’ve ordered another new one to be sure. Still seems like a very week spark to me. Despite the starter spinning as if nothing is wrong. I’m wondering if indeed it is drawing too much current from the batteries. The batteries seem to drop down to 7V when cranking the starter. I'm wondering if indeed the starter is drawing too much current, despite spinning over as it always has....Any thoughts or suggestions please. Ron