I am having trouble with the rewind spring jumping out of it's cup housing when I pull the start rope on my Johnson 15. I have carefully looked at the cup housing and can see no apparent problems with the housing. I have made sure the bolt holding the starter assembly is tight, but the spring jumps out on every pull. Just one wind of the spring comes out, where it goes through the slot in the cup. Do I just need a new spring? I was going to get the housing also, but cannot find it on parts searches. Thank you for any advice.