As long as all of your functionality is in your Jitter class and not the Max wrapper class, the solution is simple, but it will require a recompile. You just need to make your jitter constructor typed–i.e. not A_CANT. So if you need to get arguments, you should use A_GIMME. If you don’t take any arguments internal to your au_ class constructor, you can just remove the A_CANT.
For more details, please see the Jitter Object Model "constructor/destructor" section from the SDK.