Syncing Data For Forza 5 HELP!!!

Got a new console and redownloaded all my games, Synched no problem with every game bar Forza 5 and Horizon 2…Got Horizon 2 working after about an hour of retries but Forza 5 just is not syncing at all. Retried about 12 times now and have also left it for over 35 mins…Im sure many have been through this palaver what is the trick?