Last year was my first year. Nothing big just something to do with the kids. I used buckets and bags. Liked the bags. But this year my Aunt said I could tap her two huge silver maples (40inch diameters). I've tapped each with 3, 5/16 spiles and used tubing all into a 5 gallon bucket, one bucket at each tree. Now the ground is nowhere level near these buckets range in length each from 3-7 feet. The sap just seems to sit in two of the tubes and not empty. One tree isn't even running. I also noticed leaking around the bottom of two spiles. Any thoughts or advice? Thanks!