I have a Coleman CT200U-EX. I thought I would swap to a 60 tooth rear sprocket for more climbing torque. Stock is 50. Those who have done this how did it affect your top end speed. I read somewhere it may be as much as 5 mph less. If true that may be too much. It's not very fast as it is with the 50 tooth. And I assume it takes 10 additional #420 chain links or is it something else? TIA