Opportunity Contact Role standard object - sync custom fields

Opportunity Contact Role standard object - sync custom fields

In Salesforce Lightning, there is the standard object Opportunity Contact Role.  Standard fields from this object appear in the Opportunity information in Marketo, but it would be great to be able to sync custom fields as well.  Right now there is no way to do this in Marketo, and we're having to sync an entirely custom object to retrieve the relevant information.