I basically got the same driving advice from two shops, except since I was over heating at 1800 RPM they recommened I run at 2000 RPM (The computer won't let you go past 2100) The execption is the radiator fan is directly porpotional to the engine speed. My fan is hydrolicly drivin directly from a pump on the engine. I have verified fan speed increases with engine speed.
The picture linked to below is the sand and straw I blew out after removing the inter-cooler. This pile of debris does not include what I blew out before removing the inter-cooler or washed out with the hi pressure washer. This is 12 oz! I conservatively estimate this as half of what I got out.
I'm going to install a screen below the radiator to deflect debris kicked up by the tires.
I'll post my next driving results .... looks VERY promising!