Replacing R32 back cover

[lparsons]

I noticed a crack in the back cover of my R32 today, really the first physical damage I've seen on it in something like 3 or more years since I bought it. I need to replace this, and I was wondering:

Where is a good source for this part? I see it (used) on ebay, but is there any place that may have it brand new?

How difficult is it to replace this part? I downloaded the massive PDF from ibm.com (all 248 pages of it!) but I haven't really looked through the directions yet. Is there anything I should keep an eye out for that isn't in that file?

thanks!