The Louvre - Recommendation for private guide

Hello - I'm going to be part of the RS Paris tour the last week of April. Although we get admission to the Louvre, we do not have a guide and I would like one. I have been on the Louvre website and the guided tours (English) are not offered on the date/time that I will be there. I'm hopeful that someone on this forum has used a private guide for touring the Louvre and can give me a recommendation. Thanks in advance for your help!