Could anyone share the carburetor adjustment procedure and schematic for the KS4A, serial #KS4-055144 truck? Are there any service manuals out there for this truck? Mine has been great except for constant rich-running problems. At first, if I parked the truck with the rear lower than the cab, it would really be flooded. I guess this may be indicating the need for a carburetor kit/rebuild, but I've found that fiddling with the carb can make it run cleaner. Once I checked the air filter, and it was just soaked with fuel. Changing it really helped for a while. Another thing that really seemed to give it more power was changing the original Denso dual-electrode plugs (K20DTR-S11) to Denso Iridium plugs (IK20 with a number printed under that on the box of 5304). I was finally able to get a parts store to cross-reference these plugs. The truck always starts with fuel smoke and some roughness; then clears up almost immediately after about a block or so. I may be imagining this, but it seems that even after warmed up, the truck runs richer while in reverse. I believe what I really need is a carburetor kit and enough info to adjust it properly. Could anyone help with this as well as a source for the kit.