http://store.qu-bd.com/search.php?orderby=position&orderway=desc&search_query=nozzle&submit_search=
.35 and .25 along with bigger .50
I personally like some of QU-BD's stuff but there have been reports
both ways on the nozzles, good and bad. Now take that with a grain of
salt because some folks got 0.25 nozzles and then complianed the
extruder didn't work well.
So take a look at the facts:
We can easily make an extruder skip steps or strip the filament with a
0.4 nozzle.
A 0.35 is going to be a littler harder to extrude and a 0.25 is going
to stress the filament feed to the max.
I say go ahead and try it, likely PLA will work better than ABS.
Best of luck and report back what works.