The Pop-Top lock latch on my 86 Westy seems to be stuck in the open = (unlocked) position. It's been acting up the last few times I have used = it. It opens fine, but when I pull down to lock it the latch does not lock it = just stays in the open position. If this has happened to you or you know a = solution I would really appreciate the info it's starting to rain & I would = like to secure the top to prevent water from entering?