Cleaning and digital lap counter/timer questions

I just got my old Tyco Pro set up and running. I have not done any slot racing in 40 years....Bought some added straights and curves off of ebay to add to it, plus added some (very bland but it's working for us) scenery cutouts that I put together using cardstock. Placed those around the track, plus grabbed some small stuff I got on sale at Hobby Lobby to spruce up the look a bit. My wife thinks I've lost my mind, but the kids and I are having a lot of fun.
The track is working but I am having a couple of issues in 2 or 3 different sections where the car will stop running if not flying through that section fast enough. I did jump-wire the track (and that helped. I have about 30 feet of track), but there are still a couple of spots where the car will stop if not going thru it quick enough. When I check the track section, (by pressing lightly on the front of the car), the car works, so I know that the track section is still "live" and working, but I have to nudge it a little to get it back up and moving through the track. So, I'm not sure if I just need to clean that track section a little more or if there is something else I need to do.
To clean it, I have used both some simple rubbing alcohol and a very fine sandpaper. That has worked for the most part. Any thoughts here would be appreciated, (even thoughts on the proper "stuff" or process to use to clean it). All of the track has been in a box (or in someone else's storage) for quite some time, so maybe it takes a bit more to bring some of the track pieces back to life.
I have noticed that there are a variety of digital lap timers and counters that I think would be fun to add to our racing experience and just wanted to ask if there were any suggestions on something that may be usable in our situation (2 lane, very old Tyco track), that could be fun to add.
Thanks!
Mike
The track is working but I am having a couple of issues in 2 or 3 different sections where the car will stop running if not flying through that section fast enough. I did jump-wire the track (and that helped. I have about 30 feet of track), but there are still a couple of spots where the car will stop if not going thru it quick enough. When I check the track section, (by pressing lightly on the front of the car), the car works, so I know that the track section is still "live" and working, but I have to nudge it a little to get it back up and moving through the track. So, I'm not sure if I just need to clean that track section a little more or if there is something else I need to do.
To clean it, I have used both some simple rubbing alcohol and a very fine sandpaper. That has worked for the most part. Any thoughts here would be appreciated, (even thoughts on the proper "stuff" or process to use to clean it). All of the track has been in a box (or in someone else's storage) for quite some time, so maybe it takes a bit more to bring some of the track pieces back to life.
I have noticed that there are a variety of digital lap timers and counters that I think would be fun to add to our racing experience and just wanted to ask if there were any suggestions on something that may be usable in our situation (2 lane, very old Tyco track), that could be fun to add.
Thanks!
Mike