There's a much better way to do this by the way, since right now you have to use the swing value for the overhead stab. I do this through text editing, it's really easy and takes me barely any time.
1. Open actions.txt
2. Cntrl f spear_thrust_overhead
3. Paste this over the current code:
ready_overswing_spear 1678835712 1679818762 1
0.350000 attacks_staff_thrust_overhead 6 21 7 0 0.0 0.0 0.0 0.0
release_overswing_spear 1678835712 2183135242 1
0.600000 attacks_staff_thrust_overhead 21 43 6 0 0.0 0.0 0.0 0.0
release_overswing_spear_continue 0 572522497 1
0.300000 attacks_staff_thrust_overhead 43 50 3 0 0.0 0.0 0.0 0.0
parried_overswing_spear 0 35651599 1
0.300000 attacks_staff_thrust_overhead 50 43 3 0 0.0 0.0 0.0 0.0
blocked_overswing_spear 0 35651599 1
0.300000 attacks_staff_thrust_overhead 50 43 3 0 0.0 0.0 0.0 0.0
4. Save
5. Open the item_kinds1 with morgh's
6. Flag every spear with overswing_spear
7. Save
What this does is uses the overswing spear animation you see in Napoleonic Wars or With Fire and Sword, which uses the thrust value for damage rather than the swing value. For some reason it makes the overswing_musket also use the thrust value.