With the old pad removed, which is not that difficult normally, I simply spray on the adhesive as mentioned -- starting from one side of the pad. Once that side is attached and solid (in a few minutes), you can progressively spray the hood and pad and gradually smooth it over to the other side of the hood. I personally think the overly elaborate procedure outlined here is really unnecessary .... have done three hood pads on a 230S, 420SEL and 450SEL as I described in this reply -- with no difficulty at all. The only admonition is that you use the super adhesive available from 3M, not a general adhesive.
Also, removing old adhesive from the previous pad is not really necessary either; it actually provides a good base for the new stuff. My opinion and experience.

Ben Carter

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Ben Harrison Carter
1999 Mercedes ML320 87K
1992 Mercedes 300CE 89K
1995 Corvette 29K -- Sold Dec 09
1989 Mercedes 420SEL 99K -- (Sold 4/08)
1968 Mercedes 230S (106K) (Sold 9/06))
1976 Mercedes 450SEL 130K (Just sold - 06)
1961 Mercedes 220Sb (sold years ago)