First off, I have not actually completed the process as I have my own feeder colony so always have fresh on hand. (I'm perpetually at step 2 completed 

)
It's usually fairly easy to switch a BRB over the F/T, many will make it in a single step, simply offer a warmed up F/T feeder and done. Others are not so easy and you need to take a stepped approach. Also, it's OK if they miss a few meals, makes em hungry and more willing to eat anything. Steps to getting one switched over can include....
1) Good eaters do better so get them on a regular cycle first.
2) Get them eating F/K (maybe even still twitching?) - yes, that means you have to kill their prey for them. I know - no fun but suck it up!! 


3) Once regularly eating F/K, try F/K that has set for ten minutes (allowed to cool a little)
3) Next step is F/T, be sure the feeder is FULLY thawed and warmed back up to correct temp. Too cold or too hot and can be refused. I don't know what that temp is, try temp guning a live one??
Tips/tricks I've heard
1) DUH, wiggle it
2) leave it and do not disturb
3) Braining it - yuck - but if it works???
Most of my adults and subadults are on F/K. I do have two "mousers" that refuse rats and only eat live mice. Sucks but I deal with it. Mine are not overfed so when I am feeding I do get strong feeding responses and even those that do not strike/coil will typically eat the dead animal if simply left there for a half hour or so.
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Thanks,
Dave Colling

www.rainbows-r-us-reptiles.com
0.1 Wife (WC and still very fiesty)
0.2 kids (CBB, a big part of our selective breeding program)
LOL, to many snakes to list, last count:
26.49 BRB
20.21 BCI
And those are only the breeders 
lots.lots.lots feeder mice and rats 

