Transmission shift cable fell off side of trans

Hello. Anyone know what I need to do to fix this? I was able to push the cable end back on for now but it's not on there very good. It appears the hole in the cable end is reamed out a bit and/or the pin on that lever on the side of the trans is corroded too much:



I'd like to try and replace that lever first if possible. Anyone know what it's called? I can't find it anywhere online......

Thanks.