LTspice has the A-device as an OTA building block for Op-Amps. It’s dated and unique to LTspice, so I didn’t implement it for QSPICE.
The next generation, in QSPICE, is the à device. It solves the hardest part of Op-Amp modeling, a transconductance that draws power from the appropriate rail. It also supports an extension that is a compete Rail-To-Rail Op-Amp as a native circuit element. I’m generating a notes on how to use it and illustrate its value.
As far as the LT1028, that is a device I’ve used extensively for signal conditioning down hole in oil exploration.
The trick to modeling it is that it has about 30pF capacitance between the inputs which makes stability challenging. The datasheet isn’t lying when it talks about just a few pF input capacitance. That’s on the non-inverting input while in voltage-follower configuration. You don’t see the 30pF because it’s bootstrapped due to the voltage follower configuration.
If you can find a PSpice LT1028 model, use that. If it’s missing the input to input capacitance add it.