The INA122 needs to be in there because it has the 5 V reference for when the 2 inputs are equal and with a gain of "10", a -.1 volt diff at the input creates -1 volt (4 V) at the out and with +.1 volt diff at the input, you get a +1 (6 V) at the out.
The good news is, with the reloaded LTspice and the use of their devices, subs, and .Libs, it will now sim, except for the relays, I think they have too slow of a response time. You most likely won't have the LT1086-10, I had to build my own by manipulating the LT1086-12 files as explained earlier. One thing I did encounter was that if I use Excel to do my modifications, they failed to work for ever after. If you do decide modify a .sub file, I found the best way do it is to find it with Window Explorer, right click it, and open with the spice program. There you can copy, paste and change it into LT1086-10. FYI, LT1086-12.sub is embedded in LT1083.LIB.
To make the LT1086-10.asy file, open the LT1086-12.asy in C:\yourSpice\lib\sym\PowerProducts with word pad and make your changes as shown above and save as LT1086-10.asy
Have fun!!!