Needing to change out the two gaskets on the bottom of the transmission with TA on my 400. I have all the fluid out and the plate off that’s got the drain in it but the plate that has alittle slotted lever and is the shape of a T won’t come off? I have all the bolts out but I’d like to know how to get that plate off the gasket is leaking very bad Do I have to take the set bolt out of that plate and slide it forward or backward to get the whole plate to drop down? Am I gonna get anything out of adjustment? And then what fluid should I put back in the trans? It had gear oil in it I think