hi @Tim Edwards, do you happen to have a picture of a basic skywater AND gate wired up in magic? My current layout for a ring oscillator with an AND gate looks like this and in my lvs an error is coming from the AND gate making me think I didn't wire something properly:

Okay, the problem here is that the SkyWater "HD" standard cell set does not have well and substrate contacts inside any of the cells. It is expected that a "tap" cell should be placed for every dozen or so gates to make those contacts. So you just need to add an extra gate

sky130_fd_sc_hd__tapvpwrvgnd_1

to the end of the layout. That should be all; everything else looks correct.

Thankyou, it has the correct number of nets now.