Shifting on take off from first to second at high RPM and hearing a lound
could be the result of trying to run your ZX3 like a NASCAR.
These 5 speeds are very delicate, and, assuming you still have the factory
drivetrain and tranny, they cannot take the torque transfer from first into
second that well. I would say: don't shift fast and pop the clutch up after
getting into second. Or, put a racind tranny/flywheel assembly in there.