Here are some other solutions that use a TAMA cowbell/accessory bass drum hoop clamp mount, and some other modern parts. The benefit I see in this type of solution is that it`s so solid you could mount a 24" if you wanted to. I tried this fix with the original Pearl mount bracket just barely tightened and still this system held solid. A benefit of this would be that you wouldn`t need to swap out a stripped mount- you could use it just as the insert point and have the screw just give light pressure. See pics.
As I said before, I play mine in the simple, original way and have never had a problem- but there`s always solutions when there hardware laying around!
[IMG]http://i302.photobucket.com/albums/nn87/Osakabop/P1010005-5.jpg[/IMG]
in the above shot the L-rod is reversed using the longer section to extend out to the hoop clamp.
[IMG]http://i302.photobucket.com/albums/nn87/Osakabop/P1010009-8.jpg[/IMG]
this shows the set up with a heavier 22"- very solid feel
[IMG]http://i302.photobucket.com/albums/nn87/Osakabop/P1010017-3.jpg[/IMG]
this shot shows an old straight 60s floor tom leg used as a mounting/stabilizing platform with a TAMA boom arm and double clamp - I like this -using a modern boom arm sometimes if I want more modern positioning options.
good luck with this.Welcome