Well the ATV had the main jet fall out of the carb so that was an easy fix. The Troybilt carb work went fine and was returned to the customer. The Kohler 25 with the blown head gasket has had the gaskets replaced but is running rich and dumping fuel into the oil, so doing a carb repair on it. Have the $5K engine for the SxS but waiting on gaskets since the long block didn't come with them. JD deck shell turned out great but need an idler pulley since discovering that it is causing a deck vibration. Valve cover leak was fixed, still need to go get the one with the PTO issue and can now add one that I have to go get due to a bend blade from hitting roots in the yard. Have another Craftsman Z turn with the Courage twin that came in as a non running and the hydro's won't free wheel. Started out with a bad starter solenoid, which lead to oil fouled plugs, and after getting it running it also is blowing black smoke like the choke is on, but most likely the same issue as the Kohler 25 with leaking fuel into the engine while running.