I am going to guess, based upon the sky in the photo of your antenna, that you have the antenna "pointed" toward BLM. If that is so, the first thing I would do is rotate the mast 180 Deg and point it at NEL. The reason is that at VHF I think the pattern is probably slightly cardiod, with a couple dB in favor of the side of the mast the antenna is adjacent to. If true, you should pick up WRI and 133.5 a bit better after the rotation, since overall you need more gain to the southwest than you do for the east and northeast. But I caution that the exact pattern of that antenna may contain some notches and lobes, so a variety of changes could occur. For example, if there is a sharp notch (null) in the pattern that can be identified, it could be aimed at that NOAA station. On the other hand, a strong lobe could be aimed at Barnegat, etc. If I had exact dimensions of the antenna I could model it on the computer, including the effect of the mast as installed, but the mfr data is very limited, in fact they do not even provide any gain figures, so it would probably be a waste of time where simple experimentation would give better data, for example, rotating 90 degrees each week and observing the results... basically in three weeks you know the best you could do with that antenna alone, then decide whether what you were not getting was worth another or better antenna.
If it were me, I would probably cut all the angled radiators off that thing, leaving the two long vertical ones, then cut them down to about 24" each, attach the coax directly at the feed point without the balun and mount the thing at least 30" from the mast... that would give you a 1/2 wave vertical dipole with fairly uniform gain around the compass card. But there again all my life I have had no qualms about instantly voiding the warranty and "improving" stuff I had just paid good money for (to paraphrase the old Zenith commercials, "the quality goes in before the name comes off") whereas you might not be so inclined. So best to first find the ideal positioning of that antenna as the Chinese engineers designed it, then go from there.