After my 2003 GTX 4-tec sucked up a rock i took it out by removing the grate underneath and removing the rock. However now when i ride i cant get the speed i did before around 60 i get 40 and it is slow to get there with little low end power. i think that the wear ring my have been ripped up, because i can see light around the edges of the impeller and there is no black around the impeller, it looks like it was cut. so if this is the case can a bad wear ring take 20mph off top end or is it my impeller too? there is a little bit of a chip in the impeller but not all that bad i think it may just be the wear ring. and finally where can i get a wear ring and impeller removal tool and should i replace impeller too, i dont have all the much $. Thanks for your help in advanced.