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Sorry you having quality issues, i cant really comment as i have not seen your results.

Generally you may loose detail with the face that is on the bed.
I have printed these now in many different orientations, each has there own draw backs and now that there are more legs it makes it difficult to say what way they should be printed,

One way is to print so knee in air with supports but as little contact to bed as pos, though this may cause stability issues while printing.
You just got to keep trying and find the best way that works for you.