I printed this from thingiverse. I printed this with Z-Firmware BETA V0.0.3 (non official) and Z-Suite_BETA_V0.0.4. Use 0,19 layers and 10 degress support. As you can se in the picture it is kind off impossible to clean out support from grooves. Also it seem like raft cut out about 1mm to much and did small deeper groove. The file does not look like this.
Bottom part is kind off rough imo because off small degress slope but i think think can be better. Seams are not to bad but still room for improvment.