Any reason you're not using the Lowe's installer?
No one really wants to mess with them myself included because of potential headaches and very little money. I used to install them for customers but after having one from Lowes spontaneously explode in the middle of the night 2 months after I installed it due to a defect in the tempered glass, I no longer will touch them. If you can return the door to Lowes, your best bet would be to let Acme do it turn key. Mitch is a stand up guy and has done my glass/door work for years without any issues.