I was wondering if anyone had any experience in using the newer 300W bulbs in the older version of the Mulitgrade 500 head. My head is older and does not have heat shields, but I am curious if this is a real issue. Or maybe it is just an insurance company mandated precaution? If it is important, is it possible to DIY the heat shields? I have seen the picture of their diagram in another thread, but I have not seen them in an enlarger. Does anyone with a newer Multigrade 500 mind snapping a photo of what they look like installed in head?

Thanks very much,
Stuart