sabelt harnesses issues?

[Finny]

so...we bought some sabelt 4 points for the ph1, fitted them and they seemed to be great!
However after doing nearly 700 miles on the weekend to fcs and back i have noticed that quite quickly they become slack by themselves pretty easy and therefore cant be having a any effect whatsoever? anybody had this issue and sorted it? maybe i have looped the belts through the buckles wrong or something?

Dan

 

[BIFCAIDS]

I've got Sabelt harnesses and they are a tw@ to slacken so my guess is they are looped wrong, very strange.

 

[bozothenutter]

this might help:

http://english.schroth.com/racing/installation_instructions.php

 

[PAUL JA]

Instruction video