just the way aspect lock works is a very 2d operation in screen space which is why its coded into the hud instead of somewhere else. so instead of flipping the override switch and rewriting the whole hud from scratch, make it possible to turn off the things youre replacing and keep the things youre not. way i figure it, instead of not using the aspect gauge, it should be fairly simple to re-skin the aspect lock gauge to match your custom hud gauges configuration and use that. re-writing the gauge in script would likely offer very little. still better script control over missile lock would be a good thing to have.