I haven't seen this discussed before, but it appears (at least to me), that it is possible to have 100 in 3 different desynths. I currently have 100 gsm, 100 arm, and 95.10 ltw (10 separate .1 skills ups in ltw without losing skill in another) basically, the lock trick works as described in the link on the first page. Example 100 gsm, now level arm by going gsm > arm > arm > arm repeat. at 100 arm now level ltw up to 95 with gsm > arm > ltw > ltw at 95 ltw however, now you have to do gsm > arm > ltw to continue to get skill ups in ltw without losing gsm or arm.