Pardon my frustration; I just spent an hour typing in a short treatise on how we do game balancing out here, and then the phone rang, and the BBS here timed out and dumped the entire thing, explaining to me that I needed to sign in again. Sigh...
You need to be able to balance an increase in stats against the effect that increase has in terms of the game. Generally, this takes the form of the ability to survive (Energy Points), or the ability to make someone else not survive (Damage Dice or actual damage). This can be acheived mathematically, and expressed as a ratio. That ratio will at least give you the amount of increase or decrease in point cost for a given stat or ability, as determined by the base math of the game. Hope that's not too cryptic, but I'm worried the phone might ring and I'll lose this post again, so I'm avoiding the "page-full-of-mathematical-computations" I had posted earlier.
Find the ratio, and use it to refine the relationship between the costs of the various stats and abilities, and then assign whatever baseline number to the first of the stats that you wish. That should work for any balancing system. I look forward to seeing yours.

There are a total of 5 supplement books that have been written for the system, but they all predate Fuzzy Heroes 2nd Edition. 2E was written to work with these already-written supplements, rather than the other way around, so fear not. Everything in all of those books works perfectly well with 2e. We refined a lot for the second edition, we changed very little.
The only reason we don't ship to europe, or anywhere beyond Canada and England, is that such shipments are impossible to trace without incurring exhorbitant shipping fees. I can calculate what it would cost to send a package to the Netherlands with tracing if you wish, or I can send it book rate (which is a reasonable shipping fee) and we can all take our chances on it getting there, butI have had bad luck shipping book rate, and the company here accepts no responsibility when shipping it in that fashion. IOW, if it never shows up, and you asked us to ship it book rate, you're stuck with no books and no refund.
I hate that, with a passion, but the alternative is a shipping charge that is higher than the value of the books shipped (in most cases). I will look into both of these for you if you wish, and will gladly send you anything you would like from our catalog, but I wanted you to know why we generally do not ship outside of the US, Canada, and England. Let me know what you'd like to do.
I do plan on producing all of the supplemental books as pdf downloads before year's end... but if you want hardcopy eBay and right here are most likely your only optionsfor some fo these books, at least for now.
..and yes, we can always use all of the exposure we can get.

I am working on expanding our current distribution, but it is minimal right now. Anything that helps, like a review, is always greatly appreciated.

PS: To send this global priority, at 3 pounds, would cost $81.00 US.... ouch. I am open to other suggestions, but do favor tracability....
XXOOCC
The guy that runs this chicken outfit.