There are tons of bodybuilders out there who never really got fat at all, even during a "bulk". They got freagin' HUGE by slowly adding mass, and they did that by eating enough to gain 20lb in 2 months, 40lb in a year, 80lb in 5 years, and 120lb in 10 years.
It's all about consistency and letting the program work. Don't change a thing for now. Chances are that if you do things right (which you're already doing), you'll have years and years of gains to come doing exactly what you're doing.
Current PRs at 242- 495, 345, 585, 1425