If the awning channel (aluminum extrusion) is not leaking, is in good condition and not pulling away from the trailer sidewall, I'd pull each screw, one at a time, inject Sikaflex sealant in the hole, reinstall the screw (if the hole is not stripped and the screw "bites" the sides of the hole). If the holes are stripped, I'd go to the next larger size screw, drill out the aluminum awning channel (not the structure behind the channel) and install "thicker" not "longer" screws in the holes, also using Sikaflex sealant.
If there are leaks, if the awning channel is pulled away from the sidewall and/or if there is any question about whether the putty tape behind the awning channel is leaking or defective, then I'd just "bit the bullet", pull the entire awning down, remove the entire awning rail, reapply new butyl putty tape, reinstall it properly, with new screws and "know it's done right, this time"....
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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