I have had BDA's old Hybrid dump valve fitted for the last few years.
But lately its not been doing its job.
When I was getting the clutch changed I took it off and tried to give it a good cleaning, but it looks like its stuck closed all the time.
I have asked GFB the same question, but does anyone know how to totally dis-assemble it for through cleaning and re-lubbing?
Cheers as always.
Linky:
http://www.tweakit.net/shop/product_...roducts_id=487