TH350 won’t “lock” into Park

[Toro]

I need some help with the adjustment I need to make so shift linkage will stay in park. Normally, once in park, you have to pull back towards you and then down to shift. On mine now, it will go into park, but it doesn’t “lock” there. You can just pull down to place it into gear. What can be adjusted to bring it back where the pull towards you is required to place into gear? 350 with TH350 non-tilt