glad to hear she's running good.

I'd say if everything is working good for now, leave it alone. However, if you want to go a little bit further to improve performance and gas mileage, you can try increasing the gap a bit to around .055 or so. This does put more demands on the ignition system though, so it's best to replace the coil, wires, cap, and rotor so you eliminate any weak links.

Like I was saying though, if you main concern is reliability, leave her right where she is.