Running-in Secrets
 

This puts an interesting slant on how best to run an engine in for full performance ....

http://www.mototuneusa.com/break_in_secrets.htm

You should read the section on high velocity intakes, narrowing the inlets down instead of opening them up!

http://mototuneusa.com/thanx.htm

If the air/fuel mix is moving too slowly the fuel can drop out of suspension and pool on the sides of the inlet. Leaving the surface rough helps by causing turbulance which encourages mixing. the last thing you want is a mirror smooth surface.

running in secret Henry?
 

You doing next years London Marathon then?