Although i'm no expert on Transmision's,,i would guess that your pump failure could have been caused by the main input shaft bearing failing,,causing a great deal of flex and wobble on the shaft,,this can also be amplified by flex plate warpage,,,causing your torque converter to amplify the out of ballance state,,and on through your input shaft.
These condition's are more common than you would think,,

As to your torque converter problem,,are you sure you are running the proper torque converter and flex plate for your vehicle?

If you need to shim inbetween your torque converter and your flex plate to reduce the amount of distance your torque converter must travel to bolt up to the flex plate,,,first make sure that your flex plate is not cracked or warped,,,then get some suitable shim's or washer's to mount between yout torque converter and flex plate,,,Important,,,if you are going to do this,,i would weigh each of my shim's and make sure they are all the same weight,,or you are going to cause things to go out of ballance. Also make sure the shim's are of the same thickness.
A spinning torque converter with all that hydraulic fluid inside can be very unfriendly to your state of mind if it is spinning in an unballanced state.

When i look at your problem through my mind's eye,,,,,i can see your torque converter too far out of the tranny,,and the flex plate not running true,,,causing a great deal of harm to your input shaft seal and bearing.
Anyone want to take over from here?