First of all, try using slowsetting superglue( if you must use superglue). It gives you more time to positioning the pieces. Regular modelglue have one advantage over superglue tough; it actually melts the plastic pieces together, so in the long run ( if applíed correctly) it will be a stronger bond than superglue.
Btw, the wheel issue; they are models not toys, so why should the wheels turn?
