I have similar problems with both the modfactor and the time factor.
I 've tried syncing the devices to external sources; mac through different soundcards and individual midi interfaces, through an akai hardware sampler, and through a moog mp-201 with no success. The delay is almost bearably offbeat and the modfactor performs some sort off shuffle around midiclock signal.
With these current problems they practically unusable except for long sweeps or applications where accuracy isnt' critical.
