Speed Tree Help

When I import my tree into UE4 I have this hard vertical line and when shadowing is on you can really see it. Im not sure how to fix this in speed tree. Ive tried messing around with different settings in speed tree but cant seem to find the one that will fix the vertical line giving a hard shadow on the trunk. It looks fine in speed tree but not UE4. Other assets that I have of trees from megascans the shadows are smooth on the trunk and no hard edges. Thank you!