I have a modified 1995 Xplorer 400 4x4, currently i only have the rear chain on. I have went to a 30 tooth rear sprocket and stock front sprocket. Does anyone the combination i will need to use for the middle and front set of sprocket so i can retain the rear 30 tooth. I want to keep the 30 tooth sprocket because it matches the mods i have done to my bike - make it run very smooth on the flattracks and trails. thanks for anyones advise.