I am currently level 13 alchemist. I have leveled weaver, carpenter, leatherworking to 15 already and I was just wondering about the skill tricks of the trade. As of right now, I only get poor synthesis quality about every 5th or 6th synth. When leveling my other crafts to 15 and beyond, is it worth it to take up a cross-class slot for Tricks of the trade for an extra 20 CP every 5 or 6 synths? Currently my two cross-classes are Careful Synthesis and Waste Not. I am thinking of swapping Careful Synthesis for Rumination though and I was wondering whether that would be more reliable than Tricks or the Trade?