There's a DIY kit available from the webshop for adding a Q-switch. What you're hearing now is an 8 dB boost at the break-off frequency. The Q-switch allows you to disengage that boost, so you can play with without the big accent on the attack part of each note, and you'll probably have the filter fully open more often.
Personally, I'm not a fan of the full 8 dB boost, so my Spoiler has a 3-position Q-switch with 0/3/6 dB settings. I think there's also a 0/6/9 dB version.
Hav fun!