Geeetech

I have observed a strange behaviour with my new A10M.
Just a little about my setup: I have white PLA in the right extruder (T0) and green PLA in the left extruder (T1). I use Cura 4.1 with a square prime tower of 20mm with minimum filling of 40mm3 for both colors.
I have just printed the two color 3DBenchy. It starts with white (T0) at the bottom and further up the green (T1) starts. I noticed that as long as white is printing the white is clear white, but as soon as the green (T1) starts the white will get a greenish taint. The green seems to be ok. The prime tower is clear white at the bottom but as soon as the green starts, it seems to have both colors.
Yesterday I printed the two color OmNom figure, with green at the bottom and further up white teeth and white eyes. Here too the green seems ok, but the white has a greenish taint. Furthermore the prime tower has both white and green on all layers.
Everything seems to be ok when I start and only print from T0 extruder, but as soon as T1 starts things get mixed somehow.
Can it be a problem with the nozzle?

I use 35mm as the prime tower size in an attempt to get the filament to purge completely. I also have set the minimum purge length quite a bit higher than Cura 4.1 has by default. this seems to help me.

Thanks for your share.

To parker1ray:
How does your prime tower look when dual color printing?
Do you get only one color per layer in the tower?
Could you share your settings for the prime tower?
I did increase the tower to 30mm and increased the min filling to 80mm3 for both colors. It did improve the print a little bit, but the white is still tainted a bit. I believe that the problem is that for each layer in the prime tower I will get both colors as can be seen at the top of the tower. For the OmNom the outer rings are green, then there wil be some white rings and the finally green again at the center. This way one color will never get completely purged.