Storm door lock

Thanks for reaching out to us. You could consider the 40-039 or 40-039S for the keyed dead bolt but they won't match your existing hardware. 

Another option is to replace your handle set with the 40-058 or 40-177. Have a look at the specifications and see what you think. 

I'm very happy I could help. Good luck with the repair; we'll be here if you need anything else! 

You can use heavy snips but you also want to use the old spindle as a reference point so you don't cut it too much or the part will be useless. I'm afraid there aren't any tricks, you just have to have patience and take your time. I hope this helps.