Wheelbase and trail is there for the Synapse but not the BMC. Does a stem adjustment of less than 1cm threaten these measurements that much though? Referring back to DaveSSS's post earlier, the adjustments would be 8mm worth of spacer and 10mm less stem length. If that little of a change would affect handling that drastically then why can buy a 3T stem in sizes ranging from 70mm all the way to 130mm?