Hey, I am putting my bike back together finally, and I need to know how many links my chain needs to be so that I can cut it to length and put it on the bike. I am using the -1 +2 sprockets. I had 108 links on my old setup which was -1 in fron only. Would I just nees 110 links since the rear sprocket has two more teeth? or would I need more links than that? thanks