Alrighty,thanks for the responce it was very useful. First off it sounds like you have "MORE" then a little experiance with the iron. Very nice to see that as I can't even get into how much I cant' stand getting posts like this from 18 year old kids!!!
Anyway, let's take a look at what we have here. Test only for 10 weeks with ari at .5 mg eod, and your pct was??? A test taper and arim? Did you use anything else?
Beyond there's your particular situation. Now I'm not the most knowledgeable guy here, he's on vacation, just kidding guys LOL! While test alone isn't a terrible cycle, stacking the right compounds seems to work well for both synergy and for locking your gains in a little better. BTW, anyone who doesn't agree please let us know why. Then on top of that even though you did run the arimidex with your test, there's going to be some water/nutrient retention that could/should be accounting for your losses. BTW, how much of what you've gained have you lost so far. What does your diet look like now that you're off, and what did it look like while you're on. Just asking, but I'd imagine you have that pretty much locked down. How bout your training to while we're at it?
Here's something to consider, you where low before. We're all familiar with the sides of low natty t-levels: lethargy/low energy levels, poor recovery from lifting, difficulty holding/gaining muscle, and a greater tendency to gain fat. Then you ran a cycle and made some gains. The cycle ends and you're pretty sure your test levels are returning to their previous levels (low levels). Which makes complete sense, it's not like running the cycle would ever leave you with higher t-levels then before your cycle. So you are back where you should expect to be. I will say that perhaps trying something like a tribbulus, potency wood, fenugreek, avena sativa, maca type of natty t-boosting product might help. ORRR! how bout HRT, not breaking your balls but you're in the age range that would make you a prime candidate.
As for holding your gains where you're at now. I'm going to go out on a limb here. First off, I think that you won't loose all of your gains from this cycle. If you where as close to your genetic potential as you think you where, and it sounds like you where, then gains will be hard to keep. So more complex and longer cycles or more complex and shorter cycles ie. 4-6 weekers with 6-8 weeks off, might give you gains that you'll hold onto better being that you're trying to go above what your genetics should dictate. I'm kind of bassing this on what I see with various groups of people who use AAS and other ergogenic aids. For example, the guy who started before he reached his potential can gain 20 lbs and hold alot if not damn near all of his gains. The guy who either got up to his gentic potential with or without AAS is most likely going to have to start using things like growth/slin/various AAS and using for longer periods of time (like competitive or pro bb's). On top of that there's some reason to believe that if you're on longer you'll establish muscle that's more likely to stick around vs. only going on for 10 weeks. Which kind of makes sense, granted you recover from the longer cycle.