Quote Originally Posted by HyoMinPark View Post
I believe now you can have up to 3 desynths at max desynth level. Any other desynths you level will subtract from your max level desynths if you start desynthing with it— for example, you can have LTW, CRP, and BSM at max desynth, but if you decide to start desynthing fish for CUL, then your desynth level for one of your max classes will begin to decrease, and I believe it’s random which one takes the hit.

At least, that’s what I’ve always been told.
Yes, this is correct. The overall desynth cap is always three maxed (max is usually the ilvl of the best crafted gear) + 20 points. Once you hit that cap, further desynthesis gains for a profession not at the maximum will result in one of them being randomly lowered, so the book is necessary to cleanly switch desynth skills.