Both of my axle dust caps cracked in half (https://www.roverparts.com/Parts/FTC5414.cfm
). I just got my two new ones in the mail. I was wondering if there is an easy way to get them on. I tried pusing them on, and a rubber mallet. I didn't want to hit it too hard, so I was wondering if there is an easier way before I try a bigger swing with the hammer.