DELTA FAUCET, Chrome RP5649 Push Button Diverter Assembly

I am a homeowner that likes to repair items when I can, without causing more headaches or extra damage. When we purchased this home two years ago, I noticed that our master bath had a shower with this type of Delta push-button faucet and button diverter. “Swell,” I thought. “Every one of these that I have ever used never works the way it is intended.” The button never popped out when you were done with the shower, and if you forget to pull it out of the wall when you were done, you left the next person in the shower shocked and cold from the shower suddenly coming on.Sure enough, due to the age of our home (almost 40 years), this shower diverter stuck and was a pain to pull out when finished. After dealing with this for almost two years, I decided to research the repair to see if I could do it myself (instead of installing a new shower – not in our budget). A new shower diverter was the answer, and with the right tools (⅞” deep socket is KEY to taking it off easily) it would be done in about 10 minutes.I went to my local big-box hardware superstore to purchase it. Other stores in my area did not have the genuine Delta part in stock, but this particular store had a third-party part in stock (I will not name here, but it’s not hard to figure out – they are probably the only ones that make this particular part for Delta shower faucets). “Should work just fine,” I thought. I bought it and took it home.I installed the third-party part and was convinced that this would fix the “sticking button” problem. My old diverter was chock full of calcium and hard-water build-up over the years – so this replacement should work great, right?No. When I tried out the new third-party part, the diverter still “stuck” in place in the wall. When you turn off the shower, the button is supposed to simply pop out and release the water from the shower to the faucet. It was BETTER, but it wasn’t great. And the diverter was actually not diverting the full water pressure up to the shower. It was WORSE than before! Our shower suddenly had lost water pressure, with about 30% of the water still going right out the faucet and the remaining water going to the shower head. (Delta indicates that a small pencil-thin stream will flow out of the faucet below with this type of diverter design.)Reading a review that indicated that this particular part is best when you buy GENUINE Delta, I decided to do the same. I purchased it here and swapped it out. And what do you know? THE GENUINE PART WORKS EXACTLY AS DELTA INTENDED THIS PART TO WORK. Our almost-forty year old shower works as it intended.Sorry for the LONG review, but don’t do what I did. The third-party part is OK, but it will NOT do what Delta intended it should do. I fault the plastic paddle and the spring inside the third-party part. Not good enough. Delta is still making this correctly. Moral of the story? Purchase this genuine. Don’t mess around.