In that case I vote for tree growth eclipsing 119. I have personally installed a D500 by eyeballing a hole through the trees. Apparently my eyeball wasn't good enough, because I got 110 perfectly but 119 went away when the leaves leafed out. I had to relocate the dish from the back of my roof to the front where I didn't really want to see it. Oh well. Hitting 61.5 was never a problem due to high elevation angle here in VA.
After that experience, I let the pros do this for my next house, and darned if they didn't do the same thing I had. They reused a DTV mast and even though they had no LOS to 119 at that location, they mounted the D500 there anyway. They left me with marginal to no signal on 119. And they had instruments!
Installers are human, and even the competent ones sometimes make mistakes or cut corners. Since you're an HD customer with a mixed-arc setup, you might get Dish to come out and fix this for free. I kept my D500 for SD receivers, and got my 61.5 wing dish replaced with a 1000.4 at no charge. If you're a western arc customer, then you might have trouble getting LOS for a 1000.2 since 119 is already probably eclipsed and 129 will likely be gone as well.
Which DMA are you in?. If you don't care about locals, you might go with either arc.
