Purling Question

I am knitting a scarf with the basket weave pattern. Its cast on 32, k4, p4 until end of row. I'm pretty much new with purling but know how to do it. When I get to the very last stitch on the row, it is a purl stitch (at least for about the first 8 rows). I am having trouble with that last purl stitch. It is really loose after I get it on the right needle. Maybe I'm not doing it right ---- how can I correct this? Thanks.