How to tighten the hotshoe??

[startbanking]

I just noticed that the hotshoe on my RD-1 is a little loose.

Is there an easy way to just tighten it, without taking the whole body apart or removing the top plate?

Before I start removing screws, I better ask here.

 

[startbanking]

Found a quick answer here:
http://www.richcutler.co.uk/r-d1/r-d1_17.htm