Sounds good and yes those torque monsters need to be pushed hard. What weight profile were you running? Just my opinion, but if they are the light tipped weights, I don' think Cat made a wise choice using them. Might be ok for the mountains, but not for flat trail riding.This is what I ran in Cooke City, MT 9K+
Secondary: 36* helix, and Stock orange Spring. Primary: 68G cat weights with the stock Yellow/white spring. You can get all of this with the Cat 6-9K kit. It ran wel, but I did not bring enought to tune it to my liking I would prefer a little lower engaugement, May try the gold spring.
To me the 800's like to be loaded down. My sled pulled the harest at 7500 rpm when going up a hill. on the trail it would rev to about 7900.[/b]