Duc, sounds like you have had a bad experience, but at least you don't put it down to the product, but down to the ill fitting by mechanics. By Naysayers, i meant those the 'diss' the product, even though they have had no experience, but relied on the 'word' of others, not those that have one fitted badly. As for assisting in the setup, i can't, mine were both fitted at BIGCC in Wokingham, and were perfect, i always ran them on the lowest setting, apart from in winter/wet i would turn them up a 1/4.