Ah yes, the US pool, where we have 10 inch buckets and 2 inch balls and slop counts in every game. It's a wonder we ever loose a match.
Honestly though, it sounds like you just need to ease up a bit and not hit them so hard all the time. I have never heard of anyone having trouble with every tip. This tells me it is more than likely on your end.
I used to hit them way to hard, still do on occasion. A better player taught me not to let the CB get away and to only hit it as hard as needed to get position. Once I grasped that I noticed I won more and my equipment lasted longer.