I had tried a 2N7002 in the sim. For some reason, the model showed about 900nA gate current. I don't believe it, but I took it out because I was trying to eliminate sources of errors. I started using spice when you had to hand draw a schematic, name or number all the nodes, and then manually generate a net list for spice to chew on. If you wanted a graphical output, it was done by printing an X, or whatever, for each data point, on tractor feed printer paper. Not sure when that was. I'm also not sure when I discovered LTspice, but it was a relatively long time ago.