Whoops! I forgot that measurement. It 9 7/8 inches.

Bear with me, this is my first attempt at plans. It's rather difficult to put into words what needs to be done sometimes. In fact, I have been making several changes to several of my posts in this thread. You may want to go and re-read some of them. Bah, there's a fly on my keyboard...adowtpwet9wetiw-0f9swerwp;sfkmspdv...got it!