Commodore Pet 2001

I have been searching the internet for 6 months now for a Commodore Pet .. Well I finally got an original Commodore Pet 2001 8MB RAM Purchased this fine computer from an individual for $230.00 knowing that it did not work. It is cosmetically in Very Fine Condition, however the previous owner said it was dead and only got a cursor on the screen.. After I received it, I started looking closely on the main board and there it was a video IC chip that had 2 pins not in the socket. I reinserted it, and did get a prompt but just for a few moments. So decieded to reinserted all the IC's. I powered it up again.. And there is was 8 MB RAM and the beautiful Commodore Basic prompt.. Typed in a small BASIC program and it worked just fine. The Chicklet keyboard has several keys that are hard to get to work, I must press some of them several times to work.. Anyone have any ideas on how to clean them. Have not tested the built in cassette yet.. I am very excited to add this great machine to my collection. In 1978 I Lusted for the first time for a computer, and it was this machine. But in 1978 no way could I afford to buy one.. Phil...