Welcome, abetwo643;
   Way to go.  I'll bet that thicker cord was hard to weave.  Good job.
    A few weeks ago I made and used a Rockman for the first time in a while and was pleasantly surprised at how much easier and better it worked for me.  I posted a thread about it.  Today I finished up a TS3 I was making and tried it out this morning.  When I first started messing with and modifying Malik Lund's Appu-sling I thought that I'd discovered something great, but, as the tutorial states, it sometimes prematurely dropped it's projectiles.  When I found the solution,  pulling the pouch strands very tightly when weaving it so that the pouch formed a permanent "U",  I thought I'd found what would be my signature sling.  Something still was missing.. I was more comfortable with slings with bigger pouches and gradually the TS3 got pushed to my back burner. 
    To make a long story shorter, as with the Rockman, everything was different today.  It worked like I always hoped it would.  Obviously, something in my style had changed and improved.  I used mostly Byzantine style and a few Choctaw (underhand Byzantine) shots.  I tried all different sizes and shapes of rock, from acorn to almost fist sized, shot many, many times, and not one projectile was dropped.  Also, the smaller stones fired just fine.  The TS3 may still end up as my signature sling.  Today's was a really good session.
   I have to go now, but I'll post a picture of the sling and another kind I recently completed, later today.

I ran out of stuff to make my normal Rockman slings and tried a 3 strand sheep shank this weekend.  Works like a charm.  No dropped rocks, and the pouch fits perfectly with my available rocks.  They are about the size of a chicken egg or a little smaller.  I have a 16 strand box braid in the works, but that is going to take a while.  This one only took about 20 minutes, done during commercials of my kids cartoon shows.  I've tried the PJ slings too, but they kept twisting in the pouch.  I used some rope that was about 1/4" in diameter.  Were I using paracord, I'd use the PJ model.

  The pj is an excellent design;  you'll never find me writing anything bad about it.  It's one of my top three favorites in fact, up there with the Rockman and TS3.  I've found that the TS3, if made properly, is just as easy to use as the pj.    The trick to making a TS3 easy to use is to pull up hard on the warp while weaving the pouch so that the pouch stays in the shape of a "U" when you're finished.  If your TS3 looks like this it will hold onto projectiles just as well as a pj.  I don't know why weaving a TS3 pouch in this manner makes such a big difference but it does.