Tell us about yourself!
http://www.thingiverse.com/thing:1423957 Suggested mod! Very simple solution to the fan issue, easy to install.
Can you say how you fixed it? Just for reference for others having a similar problem.
what does your z-axis endstop switch look like? I had an issue because i was using a switch with a roller, once I removed it the little gap disapeared.
The print head yes, but you will need new mounting screws. The wooden extruder mount adds 6mm to the design