Before you strip anything down, if you're happy that it was timed up OK, then take the plugs out and spin the motor over. Make sure it doesn't vomit petrol out the cylinders.
K-jet is like an old retarded person - one bang to the (metering) head and it can get knocked miles off course and have no idea what's going on. This can result in cylinders full of petrol very quickly and an engine that soon won't want to turn over at all, let alone start.