The coffee stream is weak and does not make as much ciffee as it should. I have descaled the coffee maker and it does not seem to have made a difference.

I had alsready done the unclog needle & de-scale process with no success. Just fixed my problem (same as yours) by whacking the unit really hard about 6 times near the top while it was brewing. I read this on a blog and about 4 other folks said it worked for them. Whack it near the tope (not a tap...a good hard one!), and I had to laugh, b/c not only did it fix the problem, but it made me feel good, too!

Clean the Kcup holder.

Cleaning the K-Cup Holder

1. Remove the K-Cup assembly
   To remove the assembly from the brewer, open the cover by lifting the handle. Grasp the top of the K-Cup Holder with one hand while pushing up on the bottom of the assembly from underneath with the other until it releases. The K-Cup Holder is dishwasher safe.
2. Clean the Funnel
   The Funnel can be removed from the K-Cup Holder by pulling on it until it snaps off. The Funnel is dishwasher safe. To replace it just snap it back onto the K-Cup Holder.
3. Clean the exit needle
   The exit needle is located on the inside bottom of the K-Cup Holder. If coffee grounds or cocoa mix gets clogged in the exit needle, it can be cleaned using a paper clip or similar tool. Remove the Funnel from the K-Cup Holder, insert the paper clip into the tube and move it around to loosen the clog and remove any debris. Please note, you cannot poke all the way through the needle as the opening of the needle is located on the side and not the top.
4. Install the K-Cup assembly into the brewer
   After cleaning, align the K-Cup Holder tabs with the opening placing the two front tabs on the bottom and the single tab on top and snap it into place by pushing down on the top rim.