I'm sorry man, you must be doing something terribly wrong. I did half the amount you're doing (250mg), and I gained 20 lbs in a FIVE week cycle while also cutting fat considerably. I actually planned to do a longer cycle but had such good gains in muscle and strength after 5 weeks I decided it was enough. I also kept all my gains and no PCT drugs were used. Makes me wonder about differences in genetics, receptors, training and diet. I've always done 5-6 exercises per muscle, 4 sets / exercise (3 sets to failure), and looking at your workouts, you seem to be doing way less. I trained intensely for 8 years before my first cycle and was considerably bigger than you are now before it.