I suspect it's the trigger bar spring riding a rough spot on the trigger bar.
You can remove the side inspection plate on the right side and you'll see the trigger bar and spring.
You can take some fine sand paper and a popsicle stick or a small stone if you have one and clean it up nice and smooth and I'm sure your problem will go away.
Over time it will probably go away by itself with wear but I didn't like it much myself. My new T9 had the same issue so it's not a value line thing at all.
I don't remember the size of the torx screw but it's like a 10 I think. Easy fix. Let us know how it works out.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."