Depending on your exact location you should be binding 6-8 Downstream and 3 Upstreams.
But your signal is way too hot and could be blocking the bonding. You want that Downstream below +10.
Assuming there is no amp, Do you have a 3 way or 4 way splitter handy? If you use on of the 7 legs it will make your levels +6 and Upstream of 46. Much better.
Just make sure you terminate the unused legs with these: »www.amazon.com/Ohm-Termi ··· rminator