i wreaked my bike in sept 2010 been rebuilding it bought a used lower tree for it and went to install it yesterday,the one i pulled off was a consistsant diamiater all the way down where it goes through the frame and had round ball bearings, the one i bought from ebay tappers in the middle and has a needle bearing pressed on the lower part. i looked on ebay and other people are selling this same lower tree that tapers with same needle bearing and saying its for a 954, though thru my research and from the one that came off my bike it it is a consistant size all the way through with round bearings will this one work and is it for a cbr 954?