Font doesn't follow the Google Fonts CJK vertical metric schema

[rbanffy]

com.google.fonts/check/cjk_vertical_metrics
Check font follows the Google Fonts CJK vertical metric schema
with gfonts_files/3270/3270-Regular.ttf

  Rationale:                                                                
  CJK fonts have different vertical metrics when compared to Latin fonts. We
  follow the schema developed by dr Ken Lunde for Source Han Sans and the   
  Noto CJK fonts.                                                           
                                                                            
  Our documentation includes further information:                           
  https://github.com/googlefonts/gf-docs/tree/main/Spec#cjk-vertical-metrics

 FAIL OS/2 fsSelection bit 7 must be disabled [code:                        
      bad-fselection-bit7]                                                  

 FAIL OS/2.sTypoAscender is "1600" it should be 1760.0                      
      [code: bad-OS/2.sTypoAscender]                                        

 FAIL OS/2.sTypoDescender is "-400" it should be -240.0                     
      [code: bad-OS/2.sTypoDescender]                                       

 FAIL hhea.lineGap is "180" it should be 0 [code:                           
      bad-hhea.lineGap]                                                     

 FAIL hhea.ascent must match OS/2.usWinAscent [code:                        
      ascent-mismatch]                                                      


Result: FAIL