Hi guys, I need help figuring out a briggs type number. The complete number is 204412-0156e2-0505xxxx, I know the meaning of the first part but not the type number. I ask because I have two engines with the same model number as this one and they have different covers but mainly I want to know if it is a cast sleeve type with ball bearings. The ones that I have are aluminum bore with sleeve bearings (least durable engine of that size). Thanks