We just left Suncoast Designers, Inc. suncoastdesigners.com
in Hudson, FL. They repaired our 120" large living/dining room slide window. We are very pleased. We were there over night - they provide 50 amp w/water and have a dump station. The cost was $500 but they completely remove window, separate the insulated glass, remove the seal and wash the windows. Then apply a new seal and re-insulate the glass. We are very pleased.
Isn't cheap, but for the faint of heart like ourselves who can't imagine being able to use the do-it-yourself kit, it was well worth it!
We posted more info on the repair site thread.