You should get a spacer with every bottom bracket, if not ring Tarty and they will know what your on about, simply take the non-driveside cup out, then the driveside, insert the spacer on the bottom bracket then put the driveside back in then put the non-driveside cup back on..
http://www.tartybikes.co.uk/product.php?pr...p;category_id=2
as you can see, that spacer there..