you could do it that way too...leaving 110 as the only LNB connected
As for swapping...lets call the slot where 119 is slot A and 110 is slot B. You'd take the LNB out of slot A and put it where slot B is and vise versa. We know 119 is good right now (you've proven that above) so I'm almost tempted to say bad LNBF.
I'd set up a service call to have them swap that out. They'd probably swap it for a Twin LNBF. This has 110 & 119 in one housing and an internal switch so you wouldn't need those switches out in the elements
