This thread appears to have been dragged up again out of nowhere...!
Like others I would suggest Flight Simulator glideslope boxes. Works pretty well.
Seeing also as this is a second failure, I'd hope you have looked or have done a short trial lesson in a real aircraft too to see if this really is for you and your aptitude. I know as gbotley says it might not exactly replicate the test but flying through boxes is one of the few tests that are properly flying coordination specific and worth doing anyway to see if it's really what your up for, after all, it'd help in interviews to show your forward thinking and interested in flying and not someone who's just suddenly picked this career! It's a big investment with lots of competition, so may you be third time lucky!