A question.. I have the Micromark equivalent of the K40. I'm looking at a tube upgrade and all I do is cut. Lightobject sells a 45W tube that requires an extension on the housing (not a problem) but the tube diameter is 5mm bigger than what is in the unit (32W called a 40W).

I've not got any answers anywhere I've looked except "modify the existing mounts". Has anyone done this? I'm not sure what "modifying" would entail to ensure that I don't change the mounting alignment.

Thanks. This forum is a life and mind saver.