Can highly recommend Dr Phil Thomas from Qld Vet Specialists in Brisbane.
He has done all our reproduction over the years and late last year we did a Frozen Semen insemination (there were major issues with the semen quality upon arrival in Australia which wasn't picked up until we were ready to do the insemination). Based on the quality we should not of had a pregnancy but we were fortunate and ended up with a singleton female to add to our breeding programme and put it down to Phil's expertise.
He is always accommodating and will give you facts which is what you need when dealing with reproduction and especially frozen semen.