727 not hitting second hard enough

I just put a tf3 shift kit into my 727 transmission and followed the directions for trailered race specifications.
Right now, it's hitting second and third too smoothly, would be perfect if I wasn't looking for it to slam into second.
Anybody have any idea what the issue could be? I've adjusted both bands properly and tightened the kickdown as much as I could.

Thanks

When you say "tighten the kickdown" what do you mean? The TF3 does not require the kickdown linkage. You remove it and wire the kickdown lever at the transmission all the way back. The TF3 converts the valve body to full manual. Is that what you did?