Which kit do you need, do you know that?
My GRiSO needed the expensive kit C.
I bought kit B allong with the extra parts which are in kit C.
Total costs € 870,-
Do you have to pay it yourself or is it some kind of warranty?
If you have to pay yourself, try to contact TLM in Nijmegen, Netherlands.[You must be registered and logged in to see this link.]
If it is a warranty claim, you are in hands of your dealer and importer.
I hope the best for you.
Ps I don't think you can use kit A. I think the longer tube between head and cover will fit through the
alu rockerbox from the newer ones, those from kit A.