Peerless Diverter for Two Handle Kitchen Faucets RP41702

My wife and I chose a Peerless/Delta faucet not only for style but also for the quality that these brands have represented in other purchases we have made in the past. My water flow from the faucet started slowing down approx. 6-8 months from purchase and after some research we have learned that this is a common problem for this particular diverter (RP41702). I am writing this so that Peerless/Delta can relay the message to their supplier/manufacturer.

I purchased my Peerless faucet for the styling and the quality that I thought was associated with Peerless Faucets. I have owned it for about a year now and the sprayer has already stopped working for the most part (very low flow and water coming from the spigot while using it). I have removed the diverter per instructions in the manual and cleaned it by soaking it in vinegar then regreasing o rings with silicone grease. I also did this with the sprayer handle. No help. My previous faucet lasted and worked for almost 20 years with no maintenance before I replaced it and that was only because it was a low spigot that got in my way and I finally got tired of it, but the sprayer never stopped working like this one has. Though the styling is just what I want, the quality is not good. Very disappointed in your product.