Topband: magnetic loops, DXE vs Wellbrook

[WW3S]

I have used a DXE loop (formerly Pixel) for the last couple of seasons 
with fairly good success from my small lot. I was able to get a 
Wellbrook loop this year as well, and in testing, notice quite a 
difference between the two.....the Wellbrook is very noisy compared to 
the DXE, and I'm wondering if I have it installed correctly. It seems 
pretty straight forward to hook up, but since I dont have the manual, 
wondering if there is anything maybe I overlooked.....with the DXE, the 
band noise present on my inverted L just about completely disappears 
when I switch to the loop, but with the Wellbrook, I notice very little 
difference.....any using a Wellbrook that could share some tips/notes?