hI I have a jack shaft kit on my mountain bike and am looking at the gear ratios for the front crank end. I am currently running the standard sprokets that come with the hd jackshaft kit. I think they are 36 tooth driving the bike chain to the rear 8 speed cassette but I can only really use 4 or 5 gears as my motor does not seem to have the power to pull the higher gears on the flat so the only time I can use them is going down hill. can I change the gearing on the crank from a 36 tooth to a 44 tooth ? would this help? also that would mean I would be running 44 and 44 tooth on the front set up?...will this work? im sure their is someone out their that knows more about these things than me