I just happened upon this page and I thought it was very interesting, so I thought I would share it with you guys. This was a 6 month study done by David Bellis in 2005. He took 3 Super Dwarf Retics and 1 mainland and put them on 4 different feeding schedules for 6 months and documented all of their monthly growth rates. The results definitely seem to show that there is some truth to how it is possible to control Retic sizes through feeding schedules. It would have been even more interesting if he would have also included a 2nd mainland on a bi-weekly feeding schedule, though...
http://reticulatedpython.info/misc2.html