Sargent & Greenleaf 0 Ratlock 1

It was a struggle to be honest. Yesterdays graph looked good. Started looking for second number today, graph seemed to show 93ish so tried the best two graph points from yesterday, and the one hopefull from today in various permutations. Blank, nothing.

Then thought take the two from yesterday, (i checked the strong looking was 81 wheel 3) and started dialing in -/66/81 with the first blank number going up in 2 digit increments, (see "X" s going along the bottom of the graph left to right).

It opened on the combination 42/66/81.

Two questions really. Apart from obvious human error, the graph today trying to find the next number by parking wheel 3 at 81 and moving wheels 1 and 2. It seems to show good variation at around 93, which later was found false,and the number 42 that got it open with the first number didnt really come up on the radar at all.

To help me in my learning curve along to the next cobo lock, what would you more experianced guys do differant.? Or am I heading in the right direction with the methology.?

Well here is my first sargent and greenleaf class 2 combination safe lock opened.