turbo 400 plug bug

[prateroad]

I don't know if this is the right place but here goes. I have a rebuilt turbo 400 that the PO didn't have the torque converter installed on the input shaft. I noticed that a few inches back on the input shaft a small hole that a bug has plugged with dirt. I do know that those plug bugs put spiders and such in the whole for food before plugging the whole. Does anyone know where that hole leads to in the shaft? I assume it leads to a hole in the center of the shaft but don't know how far back in the shaft it goes. I was going to try to use a pick to get the dirt out while using a vacuum cleaner on it. I don't want to install this tranny with that causing an oil flow problem. I don't want to but I would like to know if I need to pull the front pump to resolve the matter. Thanks for any help.