Have a 77 FLH. Inner primary housing and out primary cover don´t match. Inner Housing only has 8 bolt holes while the outer cover has 9- result is the primary leaks where the 9th bolt hole is on the cover. I have the OEM parts catalogy from HD 1941-1984, but it does not list any part number for the inner primary housing for ´77. The outer Primary cover is listed as 60508-70 and has 9 bolt holes- so I think I have the right outer cover but need to find part number for the correct inner primay housing with the matchinh 9 bolt holes. Does anyone know the part number for the innner housing? or what the correct inner housing is I should be using. This oil leak is a real mess!