BIQU Panda Purge Shield for Bambu-Lab P1S P1P X1C X1E, BIQU Multi-Color Printing Upgrade Kit Purging Reliability Solution, No More Chute Clogs

I've tried it all, including Silicone sheets, oils (mineral and Silicone based). Nothing worked very well, better than stock, but not reliable. THIS is the only thing that worked (5,000+) hours on the P1S before installing the Panda Purge Shield. https://www.amazon.com/dp/B0F8NQS2CV?th=1 I've not had a single 'clog' since installing it. YMMV God Bless