MikeLSXSHAMU

I dont think I am loosing 4th now, at least I hope I am not? with the other transmission I did lose 4th, I could tell because the converter would lock up even though I was in 3rd gear because the computer thought it was in 4th, and I double checked all speeds and rpm calculations. So when that first trans went, I did lose 4th. I am just hoping I am not on my way to losing 4th with this other trans now. at this point i feel like its something tune related.