Help please,after the initial start the owners manual states that the choke should be kept open for 30 seconds on fast tickover till the engine does not stall.Failure to close the choke may result in damage to the engine.Unfortunately if i try and pull away after this point the bike kangaroos for a short while until the engine warms up.I have found that as soon as the engine starts i can pull away with the choke fully open with no problem.Can anyone advise me if i will be doing any damage