301 Redirect and dynamic URL

[parapet]

I've already found some of the help I need on this forum here:

http://www.tek-tips.com/viewthread.cfm?qid=1595953&page=2

But I still have one URL to redirect for which I have not been able to figure out a solution. I'm hoping someone can help.

The URL I need to redirect is:

/_apps/water_faqs/reviews_details.php/18/what+is+culligan's+100%25+satisfaction+guarantee/

For all the other URLs that were like this one, replacing the + sign did the trick. Unfortunately this last redirect is still throwing me, and I'm guessing that it has to do with the %25 in the middle of it (apostrophes do not seem to have a problem as other URLs redirected just fine with them). %25 is code for the percent symbol, as no doubt you know.

**The following sample code works beautifully for all the other pages:

RewriteRule ^_apps/water_faqs/reviews_details.php/3/what([^.%])is([^.%])hard([^.%])water/$ [URL unfurl="true"]http://www.mysite.com/at-home-or-work/water-treatment-faqs/what-is-hard-water.php[/URL] [NC,L,R=301]

Anyone have any ideas?

Thanks in advance for any and all assistance!