Weird Groove on Converter snout/bad leak

I know the bell was tight to the Block because it was a bear to get unbolted, but it very well could be a bad bushing. Im taking both the tranny and converter to a shop tomorrow, i dont know that ill go to the guys that built the tranny because i know they are good builders but they dont build converters like another place I know.
Just when I thought this was going to be a quick/cheap fix to get me back on the road now that the weather is finally getting better up here!
Is it possible for the bushing to go bad in only a couple thousand miles? Maybe the 904 isn't enough tranny for my motor? Its a healthy 360 that gets its neck rang quite often by my heavy right foot...

Thanks

There is also a good posibility that the converter hub (snout) has excessive runout. The hub shouldn't have anymore than about 25 thou. runout. Any more than that and you've got your problem. Any quality converter rebuilder aims for no more than 15 thou runout or less. Bushings don't usually go bad in that low of mileage unless when it was pressed into the pump housing it wasn't pressed in straight.