Jeff,

Re power dividers, 6-way's can be built same as 4-ways.  Just add a
third connector to each 1/4wl section and change inner conductor to
15/32" for standard 1" O.D. (.874" I.D.) aluminum tubing.  Copper is
much better than brass and silver-plating is best.

The ratios are:

2-way D/d 2.98
4-way D/d 2.13
6-way D/d 1.83
8-way D/d 1.67

I understand that the formulas published in many ARRL handbooks are
wrong as they might have been calculated with round outer pipe and not
square.  From what I understand the overall lengths need to be slightly
longer in order for the above ratios to work.  I have not finished mine
in order to post my results to you.  I made mine 41.5" long 20.75" from
center from suggestions from others.  The published formulas indicate
this should be 41" in total length.  I wish I had a network analyzer to
verify results.

Gary