Ill upset the apple cart.You have done a great job ,more power to you.If yuo wanna gain size(without drugs) the most important factor is hard work.Cramming down food without the correct workout intensity will make you fat again.Forget the routine you read in the Weider crap mags,its all written by middle aged journalists to sell Weider products.do the following LIKE YOUR LIFE DEPENDS ON IT
BENCH PRESS(INCLINE PREF)
2 sets 8/12 reps 4/4 protocol in PERFECT form,to failiure. as soon as you get to 12 up the weight YOU MUST PROGRESS BUT IN STRICT FORM.3 times weekly,if you feel you need more you not training hard enough.if its too much, cut back to only failiure on mon /fri workouts,if thats to much still,cut back to twice a week.Read all the Nautilus bulletins.
They are directed at guys like you and me(ie average length muscle insertions)i wasted 5 years with the "chanpions workout" now im training twice weekly on a similar routine,and making progress for the first time in YEARS and im 47,hope this helps.