flyvirgin,
I had no problems with the other exams, but R/T in the air was definitely a problem, and I was very concerned about the R/T practical. I did an evening ground school course with an ATCO and it was - without doubt - the best use of time and money to resolve that issue. Not only did I fly (pun intended) through the test, but my R/T as a whole improved dramatically (and I hope, has remained at a decent standard).
SD