I have some parts missing or broken

Hello! If your thumb lever is broken, then I recommend our 82-240. I'm confident that this will work for your door. As for the keeper, there are a couple of options. Consider our 89-030 or 89-036 to start. Carefully look over our dimensions and let me know what you think.

Hello again! I'll help as best as I can.

1. When I say to consider a part to start, I mean that I think it's a good option and you should look into it. We have detailed photos and dimensions on our site that you can use as a reference. I don't know for a fact if it will work, since your old one is missing, so you'll have to take some measurements of the space available in your door and see how they match up to the dimensions we show for each part. If they don't fit, you can return them for a refund. See our return policy here.
2. I'm afraid that we don't have an alternate option for the 82-240. This is the only thumb lever in this style that we carry. If that won't work for you, we have nothing else that will. It's possible yours is an older style that isn't made anymore, but I've never run across anything like that before. Keep in mind that 6mm is 0.236" compared to 7/32", which is 0.218". That is an extremely small difference. I can't think of a reason why the manufacturer would make a thumb lever in the same style but with only a little over 1/64" difference in thickness. 
3. Like I mentioned before, we have detailed dimensions for each keeper on their respective store page, including hole center spacing. 

I must stress that there's no way to know for sure what keeper will work, since your old one is missing. All we can do is make an educated guess. We cannot guarantee if our parts will work without an actual part on hand to use as a reference. There isn't going to be any way to know what you have beyond any shadow of a doubt; ultimately, you will have to take a leap of faith. There's no way around it, aside form seeing if you have a neighbor that has the same door.