Brand New MD/ When syncing external, all hell breaks loose

Hey guys. I literally just plugged in a brand new MD, and it seems to work fine when its not going off of external clock or sync. but as soon as i try to clock/sync with ableton or logic the machine has a mind of its own. playing in weird tempos, stopping and starting on its own without me touch anything. I’ve done every reset possible and nothing seems to work. Anyone else experience this? If I can’t get it to sync externally it is quite useless to me. Thanks

hmm, never mind. seems to be working fine now. that was super weird. anyone ever experience anything like this?

Yes I did…
Then I changed the MIDI cable.