Ok. I'll get some feedback over there. The fellow i talked to via phone imports a lot of wild fishes for past 20 years - i'll still try again to get a 40B between now and monday morning - just that holiday weekend removed a lot of local stock. I just happen to have a spare unusued 20 and 29 obviously a 20 long is too short for these fishes - but if i can pick up a 40B i will - i realize a 55 will be more problematic because it won't fit in my car and i won't be able to carry it in - disadvantage of living alone.Do you know of https://forum.simplydiscus.com/forum.php.
I tired of the place but while still active, I originated the "Heckel Project."
Look at the wild discus subforum.
I don't think I can be of more help to you.
Good luck.