The inner guide roll in its place. The rolls are the same as on the outer guide. I simply made them of stacks of 0,2mm metal discs. These discs will be soldered together. At least I will try to do it so. The guides will get screws in appropriate scale as axles. The plan says M6, this would be roughly M0,7 in my scale.
Interesting detail here: The small rectangular hole beneath the access hatch is the exit opening for the aileron control lines. These run „open air“ from here on.