It is a Raleigh Capri 1983, I have the bike on it's back as I do not have a good bike mechanic stand.
Alright so I'm hoping the pictures aren't too blurry and that I'll be able to explain this well enough. But my problem is basically where I'm supposed to tighten the nuts in to keep the tire in place. Everytime I begin to tighten it the tire starts to move forward and tilting to one side as the last picture shows. The rear derailleur (first picture) is what is holding that side from moving back too much, now on the opposite side there's nothing there to keep it from moving, and as you may have noticed there's quite a bit of space at the end of it.
You guys might have noticed that the screw on the side with no derailleur is sticking out a bit more, I figured maybe that was the problem so I bought some washers to keep both sides even and hopefully keep that side still. But no. I can manage to get the tire in the right spot, but that would mean I'm not tightening the nuts nearly as well and once I get on it and hit a slight bump it just shoots out of place. Can anyone help me out with this? Maybe if you own or have owned the bike in the past?
Again, sorry about the picture quality, camera kept focusing on all the wrong this. Appreciate the help!