I'm trying to PM you, but the site says I'm not authorized...
I too am having further issues with the DC jack. I sent in the laptop during warranty to fix it, about a year ago. It came back functioning well. But it has again degraded to where the power will flip from DC to battery several times in a minute.
I tried ordering the part, but the specific part number is not available online. The part I ordered arrived today, and is not the right part (at the time of ordering, it mentioned the R371):
Let me know what options there may be.
Thanks!