Our fourth snake was a BP called monty - we had issues on top of issues with regard to him feeding and tried pretty much everything. The weirdest thing was the shop i buy my reptiles from had all his clutch borthers and sisters - none of them ever ate! It ended up that the whole clutch were given by the shop owner to his staff for free as the only way they took food was force feeding - this was only done as a last resort when the body weight started dropping and they were looking unhealthy. As you know i keep regular contact with the shop - there were 7 brothers and sisters in all and even now a year old only 2 of those will eat without being either assist/force fed. The shop staff are all very experienced keepers that have extensive reptile knowledge and if they cant get them to feed i dont think anyone can.
The result was that Monty went to one fo the staff and was replaced by BP from a later clutch - here is Monty II! Very placid, chilled out but quite active BP, eats sheds and poos well and never caused us any problems.
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May you have more good days than bad
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You never know how strong you are - until being strong is your only choice
There are no dark clouds - just well hidden silver linings!!