My shower pan in my 2000 Sundowner Trail Blazer II has cracked in several places; I am checking on the price of a new pan, and my husband is considering installing it himself.  Has anyone replaced one in this model trailer, and if so, how difficult is it to replace?  I have s/w a Sundowner dealer about 60 miles away, and they want 109.00 an hour for labor; we'd like to avoid that, if possible.  He's already figured out how to take the toilet out.  Any suggestions/comments, etc would be greatly appreciated.