I've been working on Clancy's Moke off and on for a LONG time......I assembled the subframes with all new parts over a year ago and when we went to bleed the brakes recently found nothing but leaks - the master cylinder leaked internally, both front calipers - brand new in a disc brake kit - are leaking too.
It's been over a year since I bought these parts and like Justin's case, they sat in the same condition they arrived in, dry, no fluid.
I've sent a note off to Spares to see what they're going to do if anything, so I guess if nothing else this is a cautionary tale - don't buy brake parts with rubber in them well in advance. I like to have some of these parts on the shelf like master cylinders and slaves for the clutch and a brake master, but if they're going to fail when I need to use them then it's not worth it.
I've been having issues with other rubber parts too, boots for the tie rod ends and ball joints splitting before they've even gotten out of the shop, split CV boots that haven't done a mile yet and so on........
I'll let you know what they say......