Gel seal is a product that has a very low filler content.----Reason being is that most if not all the sealer must squeeze out.----The crankcase halves are a precision metal to metal joint.----It MUST be for proper bearing " clamp up " and to seal crankcase compression.----I have measured the...
Used to work in an inspection department.----Cabinet full of pin gauges and " go / no go gauges ".----And when a special size was needed i used to hard chrome plate a gauge and they would grind / lap to the size needed.----Same day fix there.
After you motor has stopped you need to remove cowling.-----Remove sparkplugs.----Install a spark test device.-----Crank it over and see if there is spark.-----I suggest you rush to a repair shop.-----I am not interested in providing more input on this topic.
Tested the driver coil ??-----Are breaker points absolutely clean and set properly ?----Find the reason for the issue.----In 50+ years I have never needed to turn a motor with a drill.-----I do not use the " crank and hope " technique!!