i am trying to put in a inner slinger in my front right. it helps hold the u-joint/shaft in place. but it won't stay in there! every time i turn the wheel it presses up on the little piece it makes it fall right out! on the left side, the original piece is a lot different. i talked to a jeep know it all, and he said to grind down the axle shaft till it fits. it fits around the shaft nice, and it fits in the cup/little lip very nice and hard. we tired putting JB weld on. didn't do anything. any ideas???