I have been designing and building equipment for my gym since 1975. The biceps-supinator machine is the only one in a gym in the universe that we know of. Golds Gym, Venice, doesn't have the lying triceps extension machine. Our gym has three of them and a modified Nautilus Triceps unit that allows you to do the lying movement.
You are guilty of three major getbig mistakes:
1. You actually competed and won a real national title ( Mr Canada) getbig strike 1
2. You actually made real equipment and work out on it. strike 2
3. You feel that hard training and sound diet with build muscle without steroids strike 3.

Vince,most of these get big characters are just regular young guys that want to believe it is all steroids, and drugs.
That way they will always have a ready made excuse for not being a decent bodybuilder.
It is a lot easier to blame a lack of drug connections then your own lack of hardwork or genetics.