New version includes lots more high res training material. Almost everything is trained at 832x1216 or 1216x832

Uncut has been spun off into its own model https://civarchive.com/models/418871/xpenis-uncut

Some keywords: flaccid penis, erect penis, small flaccid penis, big flaccid penis, small erect penis, big erect penis.

You have to use a VAE, no VAE is baked in. Works best with SDXL base or low CFG for other models