Hi. My 2013 1200 GT has the Airbox mod completed and has been running a DT1 foam filter since new. Unfortunately it's now coming to the end of the road for the foam after cleaning it this year it's starting to break up on the dirty air side so need a replacement. Been struggling to find a DT1 racing distro and online is proving even harder as nobody stocks these anymore. Has anyone got the Airbox mod done and able to advise which air filter they are running as majority of them have the closed end filters only. Thanks.