I have 2 comments about the key lanes.

The first is that I would like to get the lane guard plastics (i.e., white 1-1/2" post-to-post, double sided with Bally logo); everyone seems to show this as "out of stock".

The second is that I've done a Monte Carlo analysis about how fast (on average) the 4 lanes get completed (I consider hitting the other key, the center target, as a gimme), and I get as the average # of random lane actuations that complete the set as:

0 lanes tied: 8.3

1 pair tied: 6.3

2 pair tied: 2.9

I have this as an Open Office spreadsheet, and of course, it could be used with any other game that has the option of tying lanes together.