Exactly.
And I'm thinking logically, but in my logic (what it only mine

) is telling me that transfer box doesn't have nothing with shifting gears. I had problem on my previous RR P38 with transfer box and chain inside, I changed transfer box and that was it... So, again, my logic is telling me that shifting gears down doesn't have nothing with transfer box.
I would love to say that it is something with TC or transfer box but that means that I need to play again and change first TC and then transfer box (take it off two times). And if the problem is still there then I'm the unluckiest guy on the planet. (what is nothing compared to my friends RR P38 where we took off gearbox 5 times because of "great" mechanics).
And I have in my garage another TC and another transfer box but I don't have another gearbox 4hp24.
But to conclude, you are betting on transfer box and not on TC?