Lisam LS-210 / LS-180 or Lumenier QAV210 / QAV180 shorted GoPro 4 Session Base

My Lisam LS-210 or QAV 210 clone seems to be 'another another' Clone. The difference between the first two spacers is much smaller than in the originally published Version from Krischan 1986 so I had to shorten it.