The majority of my smoking is done in old Kaywoodies, and to a lesser extent Lee’s.
I have a collection, but am by no means a collector-therefore I have integral stingers, cut integral stingers and pipes with removable stingers removed.
Pipes with stingers (cut, removed, and intact) all tend to gather moisture at the attachment fixture of stem to shank. Dissimilar materials and disruption in airflow probably is the cause (I’m no engineer).
I like these pipes because stinger or not, I can unscrew them and blow out the collected moisture mid-smoke when necessary, wether or not I have a pipe cleaner handy. Conventional mortise/tenon I need to keep a cleaner for gurgles, and I smoke fast enough that I can get a gurgle in almost any pipe.
To the point of me not claiming collector status, I do tinker with pipes with intact stingers. I usually will file the airway opening on the stinger to allow the max airflow possible, but leave the stinger intact. If a pipe is received with a cut stinger, I will cleanup and chamfer the neutered remains for best airflow as well.
Here’s two examples I happen to be carrying in my lunchbox that will be seeing 2-3 smokes each today.
First is a KW Drinkless that I’ve opened up the draft hole on the existing stinger, and second is a KW 7409 Thorn that came to me with stinger cut-I actually just chamfered and cleaned it up this morning before seeing this thread.
I make such modifications because I’m not worried about resale value, I just get a kick out of smoking old American pipes as daily beaters in the same manner of use most members here reserve for cobs (and these old briars take the beating actually as well, if not better than my cobs).
As always, YMMV, and the only person that’s gotta like what you choose to do you’ll find in the mirror