When I turn the ignition key , the cylinder lock falls out of the switch-what causes this? The cylinder is locked in the switch until I turn the key-how can I fix this? Is the only thing holding it in the little spring loaded pin on the barrel of the cylinder?

got a locksmith near you? should be able to take care of the trouble.

Thanks- I'll give him a try tomorrow.

Yes,
The only thing that holds it in is the spring pin, that sits in a recessed groove the the outer shell.
69 is a one year only deal as well, try a new cylinder to see if it will stay in place.
If not you are going to need a new switch and that is big money...