Ok guys ! I'm processing of changing my 2.89" pitch spocket by a 3"pitch spocket and i heard that to have enough clearance to make the rails pass i have to cut the rails and to put an anti-stab to make sure not stab the track ... i really wanna have your knowledge and to know what do you think about that !!! My biggest question is really about cutting the rails ... thanks guys waiting for your knews !! Btw the spockets i orderded are 7 teeth ! Thanks