Yeah, I've had them go bang on other instruments and it makes a mess. You might want to do it at the same time as the electrolytics and also socket and renew the battery-backed sram if it's not already. Here's my parts list:
The key thing to avoid an unnecessary recal, of course, is to extract the calram contents promptly. There are loads of utilities around to do that over gpib.
There's lots of discussion on this and related subjects on the eevblog metrology forum.
Alan
