Mike, that's hilarious! I'd imagine you'd get pretty weak results with filtered light on graded paper. I struggled pretty good once printing with Kentmere Bromide paper and I had and Ilford filter in the upper compartment of my condenser housing. It took me a couple of sheets, mixing new chemistry, cleaning my trays, checking the enlarging lens, and looking twice at the negative before I got it.
Sometimes I just stop what I'm doing in the darkroom, look at myself and all of the goofy stuff around me and laugh out loud at what I'm doing. Us dark side people really are a little out there to be doing what we're doing.
Anyway, let us know how the Slavich behaves!
- Thomas