Jolida FX Tube DAC

Returning to audiophilia after a long hiatus.  Did some tube rolling with my Jolida DAC and the Golden Lion 12ax7’s are a great addition.  Been reading about mods and thinking of changing out caps, etc., but not sure I want to send to Jolida in MD or Underwood HiFi in Hawaii- Chicago is terrible with UPS and USPS.  Does anyone know of any modders within 100 miles of Chicago?.