I'm pretty sure I have an extra Grass knot, and I'm thinking to start a new platinum game so I wouldn't mind to give you one. =)
I can give to you, this TM when we both are online again, ok? =)
Just for curiosity, did you get any luck with the Lapras that you were looking for a long time? I got a few new event pokemons like WishMaker Jirachis and stuff untouched, if you want a copy of one of them let me know.