Can't help on the thread other than what you probably you already know it's metric. If your needle can come out the other side you can turn the intake around but you probably already know that also. On RC carbs the spray bar has a hole that lines up with the inlet, might be the same with the CL intake. If it's the same you might need to remove the spray bar and reinstall it so the hole lines up with your new inlet location. Just guessing, never had the CL 56 intake apart.