I agree with everything here, but I will also point out something I always point out with tbol - it's a 4 weeker. MOST anyone including myself, report minimal to no gains starting in as earlier as week 4 unless the dosage is decently upped. Tbol just seems to tank at 4 weeks. It also has a long half life for an oral, so it "builds up" over time. So when you ran 20mg and 20mg in week 1 and 2, you weren't really running a good dose during the time in which it shines. I put on 3-4lbs in week 1-3 each time, and week 4 always just tapered right off. And tbol also needs lots of protein. Each time I was running a mere 3500 calories, but very high in protein (400g+) and the anabolism and recovery was fantastic - my farts were also room-clearing as well.
The other issue could be that you had underdosed UG gear.