Hi I put a Force 12 EF-315 and a EF-320. The one for 15M (EF-315) is 1:1 but the one for 20M (EF-320) I'm having SWR high. Did someone here that have some knowledge about this antenna and could bring some help with this? Thanks Alfredo WP3C Sent via the Samsung Galaxy S7, an AT&T 4G LTE smartphone