Properly installing window frames is an essential step in installing new windows to ensure smooth and quiet operation. Misaligned units can cause the window to hang crooked, stick on the frame, or even get jammed. Fortunately, fixing window frames is a relatively simple process that demands some patience and focus to detail.

First, start by extracting the replace rotted window sill from the frame and examining the pins. Check if the hinges are corroded, bent, or broken, which can make alignment more complicated. Clean the pins and surrounding areas to ensure a smooth operation.

Next, remove any existing hinge pins to obtain access to the hinges. Use a hinge pin removal tool to avoid damaging the pins. If the screws are damaged, consider revising them with new ones.

To install the units, place the window back in its structure and use a level to ensure it's properly adjusted. Make sure the window is centered before proceeding. You can use shims or small supports to secure the window temporarily.

Now, use a measuring tape to measure the distance between the frames on the window unit. Transfer this reading to the frames on the window itself, making sure they're evenly spaced. Use a aligner to ensure the hinges are square to the window and the structure.

To check the placement, gently verify the window's operation by opening and closing it. If the window moves smoothly and evenly, the units are properly adjusted. If not, adjust the hinges by loosening the pins and redirecting them as needed.

Some additional recommendations to keep in mind:

• When installing multiple hinges, start with the middle hinge and work your way outwards to ensure uniform spacing.
  
• Use a hinge alignment tool to help guide the units into the correct placement.
  
• Consider using enhanced screws or hinge pins to ensure the units stay securely in place.
  
• Don't overtighten the screws, as this can cause the hinges to bind and hinder the window's operation.
  
  

By following these recommendations and taking your time, you can ensure that your window frames are properly adjusted, providing a smooth and quiet movement for extended to come. If you're not skilled with this procedure, consider hiring a artisan to do the job for you.