First, thank you for your attention. I'm trying to design an instrumentation amplifier for an EMG, supposedly, the one I'm trying to make has a gain of 41. I'm not that adept with spice design and I've been trying to get a cohesive results with I'm expecting, but I'm getting a gain of 10, but I think it is a default declaration from the program. Could someone lead me into the correct path? Any input is appreciated.