I too struggled with the same problem. I have tried the K-Kaps with varying success as they also tend to leak.

Below is what I now do. It sounds like a lot, but it really takes very little time. I read once that K-Cup coffee costs about $50 a pound if you figured it out. Yikes!! Not sure about that, but I'm a single dad with two kids in University and I really needed to trim a bit off of my budget. This was an area that could help.

What has worked best for me, is re-using the plastic K-Cups. After brewing, remove the K-Cup, let it cool, peel off the foil, then rinse it out and dry throughly.

When I want a coffee, I just grab one of my used, dry K-Cups add my favourite coffee. I cut a bunch of small foil squares ahead of time and I simple re-seal the K-Cup with a new foil top, crimping the foil highly around the edges. I have NEVER had a leak, it works wonderfully.

Some argue that this defeats the convenience factor of the Keurig machine and I can't disagree, it does add a little extra work. At the end of the day, I needed to save a little money and re-using each K-cup 4 or 5 times really saves money. If I am pushed for time, I use a new K-Cup, but most days, I use a used one.

I'm looking into getting one of the "My K-Cup" filters but I could see the design flaw. There is filter material on the side of the filter, where the water could simply flow over the coffee, and go right down the sides. Larger coffee makers don't have this sort of problem because the filter is so large, and the water is deposited directly in the middle of the grounds. Solution: Block off the sides of the filter. There might be problems like the water won't flow fast enough and will overflow, but thats a risk you take. There are also a few alternatives to the My K-Cup you might want to look into.

We have the solution!

http://www.my-k-cup-fix.com/

https://www.facebook.com/pages/My-K-Cup-...

We have the same at work and we've been told by the seller that they sometimes come with that rubber ring that is needed sometimes they don't. Our rubber ring goes around the metal needle on the top part of the machine (the needle that usually puncture the regular K-Cup)

i've seen other types fitting on top of the grey adapter's cover.

once you have this, no more spills!

Cheers!

SOLVED !

Just carefully slide the rubber gasket off of the needle on top... add a few small washers and replace the rubber gasket...this will seal the k-up and no more leaks... works great!

RAVEN @¿@

I was having this problem and it was frustrating, to say the least. I found that the problem with the My K-Cup leaking and producing a short cup of coffee was the brand of coffee that I bought. On two different occasions, I bought a store-brand coffee and Folgers Custom Roast and had the problem. When I went out and bought Maxwell House Master Blend, the problem was alleviated. It must have something to do with the fineness of the grind. I'm sure there are other brands out there that would give good results, but my experience is, so far, with the Maxwell House Coffee. Also, if I fill the filter to the very top, I would have the problem, so I now fill the filter to 1/4" from the top. It took me awhile to figure it out but I no longer have the problem

I bought the washer that fixes the leaking on ebay for $2.29. It's called Stop Leak Guaranteed.

Update

There is a quick and easy fix that is guaranteed. Over 1000 have been sold with 95% positive feedback. Go to ebay and spend 2 bucks with free shipping for a little part that slides into the brewer. No more leaking problems with any of the reusable K-cups. Search "Stop leak guaranteed" on ebay.