It's all in the AGM transcript 2013. It clearly explains what issues they encountered with the clean-out/down time issues. Initially they were having on-again/off-again clean out problems. It became clear that they were not going to be able to roll-out # 2 with such issues thus the creation of processor # 3 - their flagship.
The change in business plan is welcome as they can now make millions one processor at a time instead of one gallon at a time.