Do i need to reduce the rake in my triple trees for a sidecar?

Boy... a lot of info and I don't know if you got your question answered. First... trail is the measurement between spot directly below axle (tire patch is too vague) and a straight centerline down from the NECK, not forks. When you use raked trees it changes the angle of the tubes, pushing axle forward or back, lengthening or shortening trail. Springers already have an axle that's forward so usually have less angle in the stock neck . Side cars have always been an accessory bolting on a stock bike engineered with neck angle to suit a 2 wheeler... ergo,it makes no diff. Steering is different now because you steer like a trike... no more leaning- steering is stiffer. As far as EZ Steer from Champion is concerned... trikes are poorly engineered due to the need to bolt on and use existing drive trains of doner bike. Rear ends were too high resulting in a de-rake of the bike. This caused tremendous instability at slow speeds (slow speed wobble) and was corrected with 4 degree raked trees... called EZ Steer. This elliminated the wobble but creates a bit of oversteering at high speeds. Bottom line is, use proper rake and trail for the bike as a two wheeler. Hope all this helps.