"Thanks for the photos.  How safely can we mix and match these mods?  Right now I don't have an iron tip fine enough to do the soldering mods.  I either need to modify something or order something.  I am interested in the pencil mod and the fan mod tonight though.  Would this be safe? "

No, I don't believe the pencil mod will do any good without the other 3 mods.
Pencil mod is to adjust PLL voltage which needs to be corrected due to the offset caused by the two solder jumpers and the resistor is a timing adjustment to smooth out clock transitions at higher frequencies I believe.

You can make the 5V fan mod any time but remember, it's recommended for Scrypt only operation.
It has not been tested in SHA or SHA / Scrypt mining mode!

As usual, do these mods at your own risk!

Wolfey2014