[R-390] Antenna trimmer

[fdigio1]

Hi guys, the restoration of my R-390A goes on. All the missing screws, lock and flat washer are on their position. All of wrong type are been replaced with the correct one, even the missing green screws. Every RF deck gear is cleaned and lubed. I have some issues with the antenna trimmer. 1) the red dot is vanished. Which is the right alignment? Full, minimum, half capacitance? 2)I suspect it is contaminated by oil or grease. I tried to remove its cover from the bottom, but the 3 wires are too short to let me expose the dual section variable capacitor and their solders to the rotary switch are difficult to reach.I could remove the worm gear on top, but I am unsure in which direction to push the pin. Any idea? Best regards, Francesco - IN3XZP Inviato da smartphone Samsung Galaxy.