Christanoid

Minor Screw Up on my side, I just noticed that doesn't work. Instead the line has to be: G0 X{prime_tower_position_x} Y{prime_tower_position_y} As it was in my original comment it just results in nothing happening at all.

I went a kind of similar route as @AbeFM and added Extruder End G-Code, but instead of taking fixed values I used the following line: G1 {prime_tower_position_x} {prime_tower_position_y} that always simply moves the hotend in the middle of the prime tower letting out the oozing in there and not over the model.