(unity 3d) Trying to make rail griding/sliding mechanic using PathCreator asset.

Hey! Making kinda sonic adventure 2 rail grinding using this asset (https://assetstore.unity.com/packages/tools/utilities/b-zier-path-creator-136082)

Have problem with snapping player to the rail: when I stop grinding and move to another point on the rail, i start sliding from where i finished the previous time. I already tried to make kinda way-point thing, but i realise that if i will continue working with this... SyStEm... it will take almost forever, i mean, yes, it's working and working good, but spend hours to figure out "where is this waypoint on curve" (asset using float to calculate point on a path), is just to much time consuming. And this is just one rail... On test scene... Not even in game... Also, if this is a stupid question, i'm a newby in unity and in c# codding. (GODDAMN why there are NO tutorials about making rail grinding mechanic?!?! Rail grinding is so cool!)

if this will help:

moving script:

 public class grind : MonoBehaviour
 {
     public GameObject selfus;
     public PathCreator rail;
     public float speed = 5f;
     public float distancetraveled;
     public bool enabile;
     private float direction = 1f;
     public Camera cam;
     public float fov = 100f;
     public float grindfov = 110f;
     public float grindfovTime = 50f;
 
     private void Update() {
         if(enabile)
         {
         distancetraveled += speed * Time.deltaTime;
         transform.position = rail.path.GetPointAtDistance(distancetraveled, end);
         cam.fieldOfView = Mathf.Lerp(cam.fieldOfView, grindfov, grindfovTime * Time.deltaTime);
         }
 
         if(Input.GetKeyDown(KeyCode.R))
         {
             speed *= -1f;
             direction *= -1f;
         }
         if(Input.GetKeyDown(KeyCode.Q))
         {
             if(enabile){
             enabile = false;
             if(direction >= 0f){speed = 150f;}
             if(direction <= 0f){speed = -150f;}
             cam.fieldOfView = Mathf.Lerp(cam.fieldOfView, grindfov, grindfovTime * Time.deltaTime);
             }
             else if(!enabile){
             enabile = true;
             cam.fieldOfView = Mathf.Lerp(cam.fieldOfView, grindfov, grindfovTime * Time.deltaTime);
             }
         }
         if(Input.GetKeyDown(KeyCode.LeftControl))
         {
             if(speed >= 0f){speed += 10f;}
             if(speed <= 0f){speed -= 10f;}
         }
     }
 }

and waypoint script:

(made cube, used "Path Placer" script, made "is trigger")

 public class grindwaypoint : MonoBehaviour
 {
     public float pointOnTheRail;
     public GameObject player;
     
     private void OnTriggerEnter(Collider other) {
         if(other.tag == "player")
         {
             if(player.GetComponent<grind>().enabile == false)
             {
                 player.GetComponent<grins>().distancetraveled = pointOnTheRail;
             }
         }
     }
 
 }

will happy to get some advices!