My BX24 has been suffering from the loss of RPM problem for a while now. Not very often, once every half hour of use. So I let the tractor run almost out of fuel and decided to check fuel flow. I disconnected the fuel line from the first filter and got absolutely no fuel flow out of the hose. I blew a little air into the line back to the fuel tank and got a gush of fuel until the tank emptied. I "rinsed" the tank out by dumping small amounts of fuel into the tank while the fuel line was disconnected into a pan and repeated five or six times. I wanted to look into the tank but couldn't find my inspection mirror. Reconnected everything and filled the tank. Used the tractor for several hours today with no problems. Time will tell if I have solved my problem.