Frequency is important, consider this study I cited earlier:
"Subjects were randomly assigned to 1 of 2 groups: 1 day per week of 3 sets to failure (1DAY) or 3 days per week of 1 set to failure (3DAY). "
"The 1RMs increased (p 0.05) significantly for the combined groups over time. The 1DAY group achieved 62% of the 1RM increases observed in the 3DAY group in both upper-body and lower-body lifts. Larger increases in lean body mass were apparent in the 3DAY group. "
"From a dose-response perspective, with the total volume of exercise held constant, spreading the training frequency to 3 doses per week produced superior results."
- McLester et. Al. 1999
Keep the same volume tbombz just divide it over 2 or 3 days.
I can concur with Layne Norton's leg improvements. That is one area which responds well with higher frequency. or maybe its also because you perform the sets at a higher focus. e.g. fourth or fifth set you may lose concentration or energy on the harder lifts like the squat or leg press. Also when you are on AAS why not take advantage of your enhanced recovery.