I got down the procedure for setting the IP timing via the drip tube method and I feel
now confident enough about it to do it as my next project in the very near future.

There is something I haven't been able to understand yet though...

What is the difference in procedure for doing the 1 drop/sec and the 1 drop/20 secs? With my engine (240D, 616), I will be setting it at BTDC 24 degrees. I have learned the procedure from a tutorial that suggests setting the IP at 1 drop every 20 seconds. What I want to know is, how does the basic procedure vary from what I'll be doing when setting it using 1 drop per second?

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1979 240D, W123, 105K miles, stick, white w/ tan interior.