Making transform smoother.

Hi. I'm new to these forums. I've been messing around with unity for about a month now, and I'm finally getting the hang of it.
I made a script for picking up objects and It works great, but the objects move a little choppily.

The script works by making an empty game object(player). I put in the first person character controller as a child. I put a sphere under the first person character controller camera as a child of the camera. The sphere is kinematic and acts a trigger.

here is the script.

Code (CSharp):

1. usingUnityEngine;
2. usingSystem.Collections;
3.  
4. publicclasspickuprigidbodies : MonoBehaviour {
5. privateVector3cursor;
6. privateboolgrabbable;
7. privateboolgrabbed;
8. privatebooldropped;
9. privateboolfree = true;
10. privateCollidercarried;
11. publicfloatthrowspeed;
12.  
13. voidOnTriggerStay (Colliderother)
14. {
15. carried = other;
16. if (other.GetComponent<Rigidbody> () != true)
17. {
18. }
19. elseif (free == true)
20. {
21. grabbable = true;
22. }
23. }
24. voidFixedUpdate()
25. {
26.  
27. if (grabbable != true)
28. {
29. }
30. elseif (carried.GetComponent<Rigidbody> () != true)
31. {
32. }
33. elseif(Input.GetKey (KeyCode.Mouse0))
34. {
35. cursor = transform.position;
36. Vector3speed = newVector3 (0.0f, 0.0f, 0.0f);
37. carried.rigidbody.position = cursor;
38. carried.rigidbody.velocity = speed;
39. carried.rigidbody.freezeRotation = true;
40. grabbed = true;
41. }
42. elseif(Input.GetKeyUp (KeyCode.Mouse0))
43. {
44. Vector3speed = transform.position - carried.transform.position;
45. carried.rigidbody.AddForce (speed * throwspeed);
46. Debug.Log (carried.rigidbody.angularVelocity);
47. grabbed = false;
48. free = true;
49. }
50. if (grabbed == true)
51. {
52. free = false;
53. }
54. }
55. }