On my stock bike my mods where stock cylinder just had vitos power pistons in it, v-force 2 reeds, stock carbs with the tors removed and inframe cpi's and a cool head. I had a +6 arm on it. I went down one tooth on the front from stock gearing. I ran 21-12-8 10 paddle haulers. It was a handful at night down there at little sahara in the trails but I really didn't have any trouble turning them. I also had a set of Paddla Brats that were lightened and stagerd cut and they hooked like a mofo and was awesome in the trails. But the Brats are very expensive. I just went back and read your post again. I missed the 145 lb part. Yeah I weight a little over 200 and needed to layover the front. Yeah you might want to stay with a 8 paddle.