I have what I believe is a starter clutch problem but need to make sure before I go deep into repair mode.The symtems for some time now off and on when I go to start the bike a sound like somthing not meshing and then a loud crunch and the engine stops turning over some time it would start on the first try but more and more it would take multiple tries always the same God awful crunch now nothing will not turn over.How doI determine if it is the starter clutch? Thanks in advance.