So I just put the 1.5mm shim in my grizz, and it went very smoothly. Rode it down the street and would say my low end is back to stock after installing my tires you see below. With the tires below, it definitely lost low end, and it drove me nuts. I like a lot of low end, so what are my next options if any to get more low end? I like to wheelie over stuff without even thinking about it. Is that even possible on a grizz? A different quad is out of the question, as I only ride Yamaha. I have the purple spring, but did not install it, because I read to try and shim first and see if the belt slips, it didn’t but I was only on my street. Will installing the spring help low end? Options?