I have the same complaint Lou, though I have had somewhat better luck with Microscale than Blair (and Solvaset instead of Micro Sol). Here's an example of Microscale graffiti over some ribs with lots of help from Solvaset:

My related complaint is that I'm running out of Microscale graffiti and I don't really like the Blair graphics (too course) so I'd like to print my own. Any good tips out there how to proceed on the cheap (w/o and ALPS printer, for example)? At a minimum I'd like to be able to make simple black & white squiggles that look like spray paint
like this. The Microscale squiggles are too opaque and sharp, and gels pens look like gel pens (to me), but I understand that white is a challenge.
Thanks,
Gary