Lionel 18064 - Need Help

[LackaLar]

Purchased the above loco nearly 1 year ago.  Very sluggish and sounds are terrible.  Was told Lionel issued a recall.  Something about two clips in rear of tender and there should only be one clip.   Does anyone have any tips on how to get this loco moving properly.  I am having the clip problem taken care of by Lionel.  Any help would be appreciated.