Set Boundaries on Fixes for New Tenant?

[Justin Case]

I just rented a home out that I soft remodeled to new 3 years ago. It still looks fresh and new. I rented the home $150/month below market to get a good supply of tenants.

The windows are an issue. They are late 80s double pane pull up aluminum. They do not have screens but I provide mini screens for them to put up if the window is open. The bottom window that pull up open do not stay on tracks or in place when up..the spring is broken. I looked for replacement springs but no luck. The glass is not broke and window does not leak air.  

The tenants complained about them as they are moving in and what to know what I am going to do to fix them. They emailed me today asking again.  How can I tell the tenant the windows do the job and it is not in my budget currently to replace them all. Will prob be around $2k+ to replace them.

They also complained about the blinds not being perfect white, color is beige. I will replace them since they are cheap. Since I replaced the blinds they are going to look for more fixes to get more brand new things.

Tenant will be very good tenant and I am trying to figure out when to replace the windows but don't want to make the tenants upset but at the same time set boundaries.

How do you set boundaries on fixes and tell the tenant the home is rented as is and everything is not brand new?