I need to put a new dish PAN on my R. C. F2072, it originally had a 30 inch dish PAN. The dealer sold me a twenty four inch dish. Pan, they had in stock with longer blades. My serial number falls after the manufacturing split, and online searches say it requires the thirty inch pan due to the gearbox changes. Is this truly the case, or can the twenty four inch go on with longer blades? Thanks in advance