My first peice of advice is to post pics!!! OK did you take the wheel out and reinstall it and close the QR yourself? while the wheel is out grab both ends of the axle and check to be sure it is not broken. take the skewer out and check the threads to be sure it is not slipping.
how is the gearing compared to the Raleigh? did you try the wheels from the Raleigh in the Moto?
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk