Last night I noticed that my shell platform/roller bracket assembly had come loose & I had to tighten the 2 mounting screws from the underside. With the platform fully raised it was still a pain to get the allen wrench in to tighten the screws. I pretty much had to stand on my head and wished I had hands the size of an infant. Is there an easy way to do this or a technique without having to remove the entire shell plate assembly? Any tricks from those who have had to do this in the past? I have only had the 550 for about 4 months now.