How to respond to unnecessary repair requests.

[Anant Lal]

I just had a new set of tenants move into my rental. Their initial move-in form noted a few conditions that they asked to have repaired. Although I was able to fix most of the issues, there were one or two that I couldn't fix or didn't feel needed fixing. 

I have 2 questions. First, are these issues I need to take care of? Second, how do I respond to a tenant insistent on getting these repairs? 

There was a set of blinds with one of the blinds missing a section towards the very end. I told them I wasn't replacing it and that I would take into account the initial condition when they move out. 

One of the three showers doesn't fully switch from tub mode to shower mode. I tested it and the water pressure and is pretty good and there is nothing wrong with the temperature control. I'm not sure how to fix it short of replacing part of the shower and redoing the bathroom. I'm don't really want to make the fix unless I really have to. 

One of the light bulbs in the garage door motor isn't working. There are 3 other bulbs in the area and the area is still well lit. 

There's a crack in the microwave door, and the tenant is worried about radiation leaking out. I've tried to tell them that a piece of plastic isn't going to affect anything and that I'll have a repair technician out there next week to look at it. I'm still getting nasty emails. 

What would y'all do?