Help with SMB3 physics for godot game.

[Shadowblitz16]

I found a post on the sonic forums that tries to convert the SMB3 physics chart to floating point values here...
https://forums.sonicretro.org/index.php?...ide.34457/

But it seems it practice to not be accurate. These values tend to make mario a bit slower then what he is in the official game.
I did multiply the values by 60 and then multiply them by get_time_scale which is this function here...

Code:

func get_time_scale(delta:float)->float:
    return delta/(1.0/60.0)

Is there a reason why these values are off?
Maybe I'm not applying deceleration correctly?

Code:

extends CharacterBody2D

@onready var animator1 : AnimationPlayer = $Animator1
@onready var animator2 : AnimationPlayer = $Animator2

@export_group("Config")
@export var animation_speed_base  := 1.0
@export var animation_speed_scale := 2.0

@export var p_speed_max := 7
@export var p_time_gain := 7
@export var p_time_loss := 7
@export var p_time_lock := 7

@export var max_velocity_falling := (4.3125 * 60)
@export var max_velocity_walking := (1.5    * 60)
@export var max_velocity_running := (2.5    * 60)
@export var max_velocity_dashing := (3.5    * 60)

@export var acceleration         := (0.0546875 * 60)
@export var deceleration_stop    := (0.0546875 * 60)
@export var deceleration_skid    := (0.125     * 60)

@export var gravity              := 0.3125    * 60
@export var gravity_ab           := 0.0625    * 60

@export_group("Variables")
@export var p_speed     := 0
@export var p_timer     := 0

var _direction : float
func _process(delta: float) -> void:
    _direction = Input.get_axis("ui_left", "ui_right")
    print(_direction)
    
func _physics_process(delta: float) -> void:
    var direction = _direction
    if  direction == 0: velocity.x = move_toward(velocity.x, 0, deceleration_stop * get_time_scale(delta))
    else:
        if  direction >  0:
            if velocity.x >= 0: velocity.x = move_toward(velocity.x, +get_current_x_velocity(), acceleration      * get_time_scale(delta))
            else:               velocity.x = move_toward(velocity.x, 0,                         deceleration_skid * get_time_scale(delta))
        if  direction <  0:
            if velocity.x <= 0: velocity.x = move_toward(velocity.x, -get_current_x_velocity(), acceleration      * get_time_scale(delta))
            else:               velocity.x = move_toward(velocity.x, 0,                         deceleration_skid * get_time_scale(delta))
    
    velocity.y = move_toward(velocity.y, max_velocity_falling, get_current_gravity() * get_time_scale(delta))
    move_and_slide()
    
    position.x = maxf(position.x, 24)
    
func get_current_x_velocity()->float:
    return max_velocity_walking
func get_current_gravity  ()->float:
    if Input.is_action_pressed("ui_accept") || Input.is_action_pressed("ui_cancel"):
        return gravity_ab
    return gravity
func get_time_scale(delta:float)->float:
    return delta/(1.0/60.0)

Note this is gdscript.