One minor problem was the design of the oil hose from the lower part of the engine to the oil cooler. This proved to be too short. The hose, being under constant pressure along with the motion of the running engine, would eventually separate from the oil cooler. The separation would in time cause the oil cooler to crack. One fix was to connect the oil hoses for the oil cooler (to and from the engine) "up side down". This configuration provided more slack for the lower hose (itself now connected to the top of the oil cooler).