Reply to Vci 400 low sound issues in club!!

I have recently decided to start using my VCI-400 (standard) during club work and have notcied that my levels are way too low.. I am running traktor 2.6 (-0.3db headroom, limiter on).. Output from VCI-400 via xlr to rca into clubs mixer.. Last evening I had everything maxed out on the vci400 and the club mixer... It is weird cos my traktor and asio settings are fine when I am hooked into my own mobile setup, no sound issues at all... It seems to only happen when I go via club mixers... If anyone has had any similar problems please let me know...

Cheers