Dont have anything against people who retro fit xenons without levelling or washers, as it does bring a huge improvement, and if i didnt know better.. as i assume alot of people dont... I would also do the same, but even though it may not be a requirement to have self levelling when retro fitting, the reason it is a requirement on factory fitted lights is because xenons are alot brighter than halogen.. and the glare from even halogens is enough to blind drivers coming from the opposite direction (potential accident cause), let alone xenons.. so it can be considered inconsiderate to use retro f