Spidey,
Like you, at first I too was perplexed by the seeming trickeration of said ramp. That is something that had me bamboozeled a plenty UNTIL I received an email from my second cousins wife's holster making neighbor who's boss's boss is one of the first Italians to have ever actually touched a Keno board in South Dakota. SHE says that David Alciatore Ph.D. has just penned an authoratative article on "Keno ramp variances and squirt"!
Supposedly, this article encompasses every aspect of angle, how various metals affect deflection and it even goes into such before unchartered areas such as "How much will sweat affect the roll of the Keno apparatus" and "Does the electoinic waves of the PPV stream affect the longitudical angle of one number over another that is in a non-sequential area."
The full article (with photos) will be featured in the September issue of "Keno Digest". For a sneak peak exerpt of this ground shaking revelation, just log onto AZKeno.com.
Hope this helps buddy!
PS- I know you'll never believe this in a million years, but the main sponsor of this august and prestigious event is none other than the very deep pocketed Betty Crocker! Yes, the very same Bettey Crocker that first came into prominence in 1937 with her now famous and much balleyhooed "Pumpkin filling for pies" that was made available in non-resealable cans!
PSS-It's true! Oh, its very true!