I have a new M&P 22 that I haven't shot yet. The problem is that I can't tear it down to clean off all the factory lube/preservative off of it. Seems pretty easy. Flip the takedown lever 90 degrees, pull about halfway out, remove slide. For the life of me, I cannot get the lever to slide out. Is this a common problem with new M&P models or specific to the M&P 22? Any secrets I should know? I'd hate to scratch it up with a screwdriver trying to pry it out.