So I've started doing my own tuning, and haven't had any problems with base repair or edges, but when waxing and scraping, I'm having a difficult time getting a good finish across the tips and tails. When I scrape I get wax buildup that doesn't come off smoothly... it seems the scraper skips or jumps when I get to those sections.I initially thought it was the scraper, so I jury rigged a sharpener with some right-angle steel and drywall screens and tried it again. Same thing. New scraper? Same thing.
So I guess the real question is how good do the tips/tails have to be? Is there a trick to getting a good finish across the entire length of the ski?