It is a hot topic right now. At this point in time, the latest TSX build does not support an external sync through ASCOM for Paramount mounts. It does support non-Paramount models.
This has nothing to do with ASCOM or SGP but relies upon TSX. If you go back to 9334 - it still supports syncs.
This caused Ken and Jared to consider doing sync offsets - but that is not yet fully implemented in the latest betas and we have been warned to not use those options on pain of death.
So basically, roll back to 9334, sit tight and give friendly support to SB to pop back the functionality.