I checked it out on the site, and to order a "PE turntable upgrade kit", it's 135 EU after shipping
No, this is something else, this replaces the whole turntable assembly.
What he needs is the turntable misfire upgrade kit, this is only the chip and only fixes the misfires, not any of the stiffness. It costs 37 EUR after shipping.
Mangojoyride: Contact dao for it, because if you have the RE, you will need 2 of them I think.