Originally Posted by RobertD

i have lapped valves on beaters with good results. a machine shop will ALWAYS seal better because when they do it, you get one crisp edge that seals (red arrow) because the different angles things are cut at, when people lap them at home, they end up with a thick band that looks shiny, but doesn't seal nearly as well. if you lap the valves, just stop as soon as you get a shiny ring around the valve. the thinner the better. spray in brake cleaner and make sure it doesn't seep out.

i think your valves are fine. i'd leave it alone. every honda valve problem i've ever had was a chipped valve.. every time i've done it it was due to holding the car floored longer than a smart person would. i chipped 2 valves at once trying to break 120 in a 89 civic. i chipped 6 of 8 exhaust valves holding the car floored in 3rd around a 4 leaf clover ramp with 5 people in the car. (young and dumb/steep learning curve)