I'm brand new to this forum and appreciate the information I've been getting from it (less the out of control flames that occasionally fly). I'm selling my 2000 YZ250 and have placed an order for the YZ450F. I have next to no time on a 4 stroke but have heard nothing but good. I ride both motocross and trail/cross country. How much will I have to change in my ride style in this move and where will the biggest changes have to take place? Appreciate the feedback in advance!