Toilet Flush Arm

My toilet flush arm broke and instead of trying to buy one I decided to design in OnShape and 3D printed one. Sorry, I don't know the manufacture but the ones I found on line did not look like my flush arm. Some wanted to replace the entire assembly, some had a triangular hole.Mine has a square mount hole that is slightly tapered, The old arm had stiffening sides that extruded past the main part. I added the stiffening sides but only up one side. This allowed the print to be flat on the build table.The arm is 219.5 mm (8.6 in) long.Build Settings:0.2mm layer height4 wallsSupport: I don't think it was needed but I printed in PLA and used PETG as regular support interface. No brim.I saved the uploaded the files in STL, STEP and 3MFI hope someone finds this useful.