I was able to use a western arc 129,119,110 dish remove the lnb, and mount a swm 3 lnb (99 101 103) to it by just drilling one hole into then lnb, and using only one screw / glue to mount it to the plastic to arm adapter, the lnb design are the same so the focal points match well. Used same screws, set skew to zero, and bam 76-100 signals on all channels in bad weather.