Right now I can only recieve 2 of the 3 locals that are in my PG. The ones that I can recieve keep going in and out. My signal never goes above 20 and I went to the antenna last night and turned it in every direction and the signal never increased. I am using the stealth antenna. Should I contact Voom and tell them my problem and maybe get a bigger antenna or is there anything else I can do to fix this problem? FYI my zip is 77651.