Best Weatherstripping/Sealing in Phoenix AZ

Original window (Pella) was ordered incorrectly, block versus nail fin for installation.  Crew that ordered the window was no longer with the company (red flag) by the time of install.  First attempt for installation was partially completed.  They failed to cut back the existing aluminum nail fins enough to allow for adjustment of the new window within the frame.  Thankfully, a defect to the window was found and warrantied through Pella.  Second install attempt, more of the existing fin was removed to create space, but still not enough.  The lower corner remains elevated, so much so that the slider was leaning heavily on the lock mechanism cause the screws to pull/strip through the vinyl frame.  Same corner was also not secured into the framing, allowing movement inside-out direction of around 1/4 to 3/8 inch which has cracked the new exterior stucco of the window.  Called back to have the issues remedied but the installer (once again, an employee no longer with the company).  New crew out, placed a screw into the lower corner to secure from future movement (which is does not).  Used drywall screws to secure the locking mechanism into the vinyl frame and was told they could replace the slider wheels with adjustable version to alleviate further pressure on the locking mechanism.  After following up with what was now the 3rd office asst. (because the other two were no longer with the company), I was told they no longer work with Pella and they would send my job to Pella as 'warranty' issue despite this being an install issue.  Pella was recently out to evaluate.  The window was installed poorly and there is no such 'adjustable' wheel for these windows.  We now have an out of square, shifting window on the front of our home with a wooden dowel keeping it secure.  That's not to mention the terrible gaps left on the interior side where the drywall was cut back too much.  Ignore the generous online rating with this company and take your chances with the next one.