So this was my first attempt at using tubing. I setup 3 lines of 5/16 tubing each with 5-10 trees using the clear check valve spiles. I tapped on January 1. I never saw the good runs. I was getting more sap per tree from the ones on old school aluminum 7/17 spiles and buckets. Anyone have any thoughts or suggestions on how to improve my yield. I am located in southern CT. Thanks