Plenty of info on this site on striker protrusion just search it. ($8 again you did well plenty of springs on the net as well heaps in the UK)
Yes Bindi2 I have been known to cause a raucous from time to time but all in the name of harmless fun, like the day we accidently killed a Dugite in the hay paddock and tied fishing line to it and placed it next to where our manager parked same spot every day then hid (he was petrified of Josephs.)
Trust me he pulled up opened the door so we pulled the fishing line, tell'ya he closed the drivers door so hard and jumped out the other side of his Suzuki ute I thought it had 2 left doors!
It was soooo frickin'funny