I recently bought the Mugen Type R front chin spoiler and factory rear under spoiler. I tyried for fit the rear, and it did not clear my greddy evo, so i trimmed it. The problem is, I have trimmed it to what should be far enough, but when the rear spoiler in placed on it kind of sinks a little to brush up against the tip of the exhauast. I thought about using some sort of adhesive, but I do not want to use double sided tape bc it would put a gap in between the bumper and the spoiler. Do you know where I might be able to find the factory installation instructions? I have the one for the front, but was unable to find the rear from handa-accessories.com. It feels almost like it does not fit like it should. Any advice is greatly appreciated. Oh yeah it is for a 98 ex coupe.