Guys have no fear, let the honda guys do their work. Dont leave/sign any thing unless your absolutely satisfied. I have dealt with the warranty department and was satisfied most of the times (well i gave mitthai to workers for good work done lol) and every thing turned out to be well. I once had to get door adjustment done on my IDSI, turned out to be well too.
Have no fear, if thats what it takes to fix the problem, let them do it. Just make sure they glue it back on properly and you give it adequate time to dry out. Perform a test at honda with water to check if the windscreen is leaking or not after readjustment/instalment.
Problem with used JDM cars is insurance too (you know the depreciation scene) and parts (but you can always have your dealer import them). So it turns out to ones personal preference and practicality. Best of luck.