I experienced some glow through of the dashboard bulbs in the SD1. with the light shining in a wierd way through the black parts. However when I took a set of spare gauges from warehouse. I found out somebody had made "counter measures" with black marker to prevent this

I did NOT make this. Somebody obviously just made it in a rush, but it seems to work well! So if you dont like of the glow through and want more precise lighting, then just take out your black marker and have a go