BA23 PDP11/23 Power Supply that couldn't; Trying to locate a replacement cap

Greetings; I received a new (to me) MicroPDP11/23 that I was fiddling about with over the weekend. After testing out the supply voltages, and then putting the system together enough to get serial out of it, there was a pop, a whoosh and a rather exciting ejected plume of smoke from one of the upper fans. http://www.kiwigeek.com/misc/PDP1123_Cap1.jpg http://www.kiwigeek.com/misc/PDP1123_Cap2.jpg The capacitor is mounted on the sub-board in the PSU that the IEC receptacle is on. The markings on the back show this is a PME271M622, but I'm having trouble sourcing a replacement. Most of the places I usually look about are showing no stock or ridiculous minimum orders. On eBay (shudder) there's a similar model, but it's marked as an "X2", and I'm not sure if that's an acceptable replacement. Could someone who is more famaliar with these things give me a suggestion as to where I should be looking? (Full markings: 0,22uF at X 250V ~ MP fo=3,0MHz RIFA GPC 40/085/56 PME271M622) Thanks to all; - JP