Ive only done a couple of roasts of decaf so far.
One in BBQ raoster and one in Imex.
BBQ roast was too long - I think I burnt them.
Imex was better but still not real good.
I think they are a much faster roast than other beans and it is very hard to go by normal rules.
FC said in a previous thread that 2nd crack is too far with these beans, so I would suggest doing 2 or 3 batches in the popper ranging between 4 and 8 minutes and see what you get.
I will probably try the same thing soon.