I did some pretty long cycles, waited 2 weeks after my last pin then ran a nolva/clomid + HCG plan similar to yours. It took a few months, We had baby number1 in 2012, i ran the same protocol 2 years later and had another baby in 2014.
Maybe you're not waiting long enough? Have you tried running your compounds through a cycle calculator? ...learn how long you have to wait before starting the HCG. You might be perfectly fine just not timing things right. Be patient, it can take several months for the boys to fire back up.