Good luck with the restoration. If you decide to let a pipe repair person do this, I think you will be really pleased.
Not real pricey and great results. I owned a L.L. Bean pipe for many years, a classic pot shape with a nice thick
walled bowl, light weight, and a fair smoker. It did have a stinger that did not just slide out. I think that finally
decided me on trading it. It was in way better shape than your grandfather's when I sold it. If you are inexperienced,
be truly careful doing reaming. It is easy to ruin a pipe with overzealous reaming, and once the inside of the bowl
is marred, the pipe will only go downhill.