PTG Bolt head failing to eject... UGH!

[Digduggy]

It does now, without the ball and spring in, but not like the factory one did... I tried the 1/8" ball and that did nothing to help.

[Robinhood]

It does now, without the ball and spring in, but not like the factory one did... I tried the 1/8" ball and that did nothing to help.

The factory one is smooth. The PTG isn't. Since we don't have a reference such as a picture, what do you see that is different? What dimensions that are relevant are smaller than the original? Is the spring detent hole in the same location as the original?