model "noobreal_v03.safetensors" "sdxl" "base" model "itercomp_v1.safetensors" "sdxl" "base" model "sd_xl_base_1.0.safetensors" "sdxl" "base" merge "subtract" &1 &2 merge "add_difference" &0 &3 alpha=1.0 merge "clamp" &4 &0 &1 stiffness=0.0