Oh man I feel that in my soul. I tried vacuuming out a dryer vent once with one of those cheap leaf blower/vac combos thinking I was real clever. That thing packed the lint so tight it turned into a brick and I had to pull the whole duct apart anyway. Then there was the time I thought I could skip scraping and just burn off old paint with a torch before repainting some trim. Yeah, that went about how you'd expect and I spent the rest of the day sanding charred wood. Shortcuts always seem to add a step, never skip one. Bet that attic smelled amazing too.