I used to have VHS tapes of some of it from that ime; but honestly, BSG1978 never had a true 'syndication run. They took the pilot and the two parters and turned them into 2 hour telefilms that they broadcast from time to time. they took the remaining single episodes and tried to pair to together to turn the rest of it into a series of 2 hour telefilms (that didn't really work, as the transition from one story to the next made to real sense.)
If you want the full uncut 1978n series - just by the DVD compilation released by Universal. It is rather inexpensive.