Earlier, Bob Gibbons wrote:

The sleeve wall thickness is just too thin for robust use.

That may well be so. However, consider that the part may have been
engineered (or at least developed) that way so as to protect the fin
socket. I'd rather replace the frangible aluminum probe plug than cut
open the fin and replace the probe socket any day!

I've got a lathe, and making a replacement aluminum plug was my very
first thought. I try to buy as few glider parts as possible, and when I
do I try to buy as many at a time as I can to get volume discouts. But
if Tim has a thing like that in stock, he'd be my first call. Business
is definitely business.

Bob K.