All, I replaced my lower unit with an aftermarket lower unit after I destroyed mine. The new lower shifts fine while removed from boat but will not go into reverse when installed and hooked up. I had to encourage the shift rod into position to reconnect. I am now assuming that the shift rod is not set correctly. I am finding different values when googling for the correct length. It is a 20" lower unit outboard model #J115TLATS. Thank you