Thanks again for your help mjk. Yes I use the tape sync input jack. I've just tried again - recorded the tape sync code at about -3dB and tried to sync on playback. Send 2 and master at max. The Tr-626 began to react with the digital trim at -10dB but just the odd beat. At +1dB trim I got sync for about 4 bars, after which the timing started to drift alarmingly (comparing the live output to the recorded tracks) At higher trim levels there was no improvement and at +6dB there was total loss of by then the hopeless sync. I'm not sure if this is a Tascam or Roland problem! The Roland has always synced well with tape!