I guess I need to weigh in here as well.
I called Terry (Slidewright) and told him I had numerous sets of skis that needed major work. He suggested the Base Faltening Tool. I purchased it with the Ruby Stones and found it to be a great tool. Easy to use and it really did the job. Two pairs had bases in the very bad category. The BFT brought them back to life. Yes, they were alot of work with many many passes but it was worth it.