I am having a similar issue to the OP and was hoping to have some light shed on the situation. I have the same antenna assembly as the OP (1000.2 EA Twin LNBF), but am experiencing reversed results. A jumper from the LNBF to my Super Buddy shows lock on 61.5, but nothing on 72.7. I have pointed this type of LNBF with this meter several times before, and normally once I lock 61.5, 72.7 falls in line. Sometimes I don't even bother checking 72.7 on the meter, and it always works out. There is no LOS issue whatsoever. There are three lines out of the LNBF: two lines go to two 211z receivers, and the third runs through a diplexer to a 722k. All three receivers show the same thing on the check switch (see below).
*THIS IS NOT MY SCREEN* but I'm showing this to better describe what I'm looking at...
In place of 119 is 61.5 with the green "OK" underneath. In place of 110 is "Conn" with an "X" underneath.
Is it possible that I'm "locked" on 61.5 without it actually being 61.5? I've tried two different LNBFs with the same result, and I'm running out of ideas... Thanks in advance for any help.