I find the gear shift assist is easy when upshifting. Keep the throttle on and it powers into each gear easily. However, when down shifting using gear shift assist to gain power when, say, going up a hill, I find it is not smooth. The Manual says to back off the throttle completely when using Gear Shift Assist Pro to drop a gear, but you loose too much momentum if surging up a hill and downgearing to gain more power. The gear shift becomes jolty. Please comment and advise the sequencing to make this work properly.