How to force uploads to use Specific Wan on Peplink 380


I have an 8MB DL/UL synchronous on Wan 1, and TWO(2) 12MBDL/1.0MB UL on WAn 2 & 3

Outbound policies work fine and sometimes get throughputs of 22-24MBPS but my uploads vary from anywhere from 1.8 Mbps to 4 mbps. I configured FTP to use WAN 1 but ICant get normal Web (Http/TCP) traffic to use Wan 1. Seems to prefer using Wan 2. PRoblem is a lot of uploads are using web based /java /active x and not using a speciifc protocol I Can designate. How do I go about this?