Thanks for the reply..
1) This sounds like a rough solution in the event that a event that I would actually care to recieve might be recieved under the unkown class and then I would never get the event as all unknown class events would be ignored... Not really a great solution..
2) I'd rather just filter event I see and don't want to get based more on the actual event then just their class types. So would my transform script work if I put it under the unkown class, instead of the general call?
I also not even sure where this mapping of event classes are or works. but thanks for the help.