Yes! When I was a teenager, people would ask me for computer help, and that was generally bothersome, so I quickly learned to say 'no'.
I offered with this because they had rang a few people and I got the impression they were not interested (I appreciate that, on paper, it's a small job with no profit). And I'd found doing my (much more complex!) kitchen sink a doddle. I just hope that I can eventually learn the solution.
I did run both traps under the bath tap, and they worked as expected. I must admit, I don't remember if I tried the same under the basin, as the access would be a pest (to get a jug/bucket in).
