In my experience parkouring with my spamf, the spring is too weak when empty and feels bad on darts but still too weak when full. When jumping or running and trying to prime, I had issues with darts moving downwards from inertia and getting jammed. Doubling up on springs made the empty performance better but then was way too stiff when full. (The spamf pusher is too big for koda feed lips normally but can be sanded down, and spamf front guide sometimes holds dart tips but can be cut down) The same inertia issue means when running with kodas upright in leg pockets, darts fly out often. I suggest a weaker but longer spring pretensioned more, so it has higher force when empty but not too much when full. For people not insane about parkour and very fast running it works great!
