If you're changing caps, make sure the replacements have low ESR/low impedance and decent current capability. Incorrectly specced caps will either not perform properly, explode, or both. The Nichicons linked above look like a pretty good bet. If you want to test the ones you take out, buy one of the cheap (but excellent) LCR meters from eBay.

In other news, I've finally received shipping confirmation of direct-from-BA order #8xx (paid mid-November) which is an X1.