Kick start shaft help?

Right.. Old casing was cracked.. Got another one.. Put kickstart spring in.. And kickstart shaft.. But how the hell do I get it to stay in the kickstart ramp thing? When I put the kickstart on.. As if I was gonna kick it over.. The kickstart wants to go up the way.. Instead of kicking down.. It can't be that difficult.. But I'm stumped .. And on my new 2nd hand casing.. The kickstart is a little bit short of reaching the bump stop.. Li casing..