Product review (4 stars): Uber Goop works (but do good prep work and use the glue fast)
<a data-hook="product-link-linked" class="a-link-normal" href="/Uber-Goop-GREY-Dishwasher-Rack-Repair-w-40-caps/dp/B000HXJ9H0/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Uber Goop GREY Dishwasher Rack Repair w/40 caps</a>

I've used the product only about a month ago, but so far I am really pleased.  I took time to sand off the rusted tines on my dishwasher rack before gluing on the uber glue rubber tips.  As others have said, the glue dries out REALLY fast so best to have someone help you.  I put glue on the tips and my wife put on the rubber tips.  When putting on the tips, squeeze them in the middle to get the air out and then as you slide them on the tine of the dishwasher rack, release your grip and push them on.  Have a rag or paper towel handy to wipe of the excess.

I also had some tines that had broken off entirey leaving a rusty spot.  I sanded it the best I could (not very good at all really) and then put a glob of the Uber glue on the spot.  It blends in pretty good and seems to be holding up well as a good seal ove the rusted spot.