Looking beautiful, wayner! I especially like the look of that cabinet, which has an awesome design on it.
On the notched lane guides, I've found that using a pair of needle nosed pliers just above the base usually gets them right out of the playfield without damage. I always label them so that I know which hole each notch was removed from and the exact depth on each post. This greatly reduces wear when it comes time to reinstall them. Once they're out, a quick clean with the wire brush, some light work with barkeeper's friend, finishing with a dry scotch brite pad, then a few hours in my tumbler and they're usually as good as new.
It's amazing how much crud builds up on those things over the years.