Ive been given a rising 4y.o. to ride. It has been broken - and the previous rider has done walk and trot. Im not a novice, but have little experience with youngsters of this degree (Ive ridden rising 5y.o.s) Does anyone have any suggestions of what i should be careful of, and any ideas what I should do when i first try him out and assess him. Thanks. Im also worried because I amquite a bit (1-2st) heavier than his previous rider. WIl this have an effect? Thanks for any suggestions!