I now use TUDE for playing Deuteros and Conflict in Middle East on Amiga 1200 6 MB and it's OK.
After starting Amiga normal I go to directory TUDE on Hard disk. Then it's time for going on option wb 1.3 with 1 MB ram ( sometimes 0.5 MB ) without Hard disk after reset. In this way this 2 my games are working. Telling truth I have not tried many games in this way because today I don't like to play games from floppy.
My thinking is that you have renamed WB 1.3 rom file in name demanded from TUDE.