Thanks all for the input, especially you Chippyfive  fitty.  You owe me a Bitburger by the way.  I found the correct sizes on Pro-FLo after I micrometered (mic'd) the stem and bearing OD's.  Pro-FLo kit #22-22-1011 $37.95  The sizes are 26 X 48.5 X 15.2    30 X 50 x 14.4  Millimeters of course.  Have a great weekend building, I will.
Greg.