Steve what levers do you use on your T100? I am thinking of getting the Tektro 520 levers (<$30 online) and using some v-brakes I have to avoid fiddly cantilever adjustments.
Also, good to see the youngster on the twicer. My son is now 3.5 years old and big enough to go on the back of our Fuji with kiddy-cranks. Tolerates rides 25-30km long if there's a break along the way. (He has a lovely pedalling style, identical to mine!) How far does your grandson ride with you?
W
I have the shimano ultegra 9 speed STI shifters with the travel agents. My grand children visited for two months this summer. We were able to ride a 16,20 and a 30 milers.