I have a 13 pro 163 with a 2.6 and AI 36 front end as a back up now that i ride a axys. I was wanting to waste some time and money and start playing with the pro. I still like riding the pro and dont think it is that much different then the axys. I am ordering a set of offset spindles for the axys and going to play with the stock axys spindles on the pro. Essentially raise the front end and drop the suspension lower to gain some height. I have been digging and cant really confirm how much lower if any the axys drive sprocket is then the pro. Looking at attack angles with my degree gauge they are almost the same in stock form. I have access to everything i need to do my diy drop and roll but not sure if it is going to be necessary? I have some 8 tooth drivers on the shelf i know will help but then have to look at different belt gear combos? Just curious if anyone out there has played with some of these ideas? . I just cant leave anything alone its in my blood. Garage time keeps me out of trouble.