I didn't use the K&S on mine but a MTW tuned pipe with my DA50R.
I painted the TPipe & tunnel with grill paint - no reflective material:" is needed - just open up the covering for good air flow.
I have read on another message board that the K&S will be a challenge compared to my MTW or the Pitts Style.
See last post on page! (Note vane/baffle install modification too)
http://whiteknuckleairlines.com/wkab...t=583&start=45
I did NOT rotate the carb on my DA and all works fine. Here is a pic how I set up throttle. Been working fine too.