I found a very good alternative for counter-balancing a DSLR with your Q3.5. This may have been mentioned before, but I missed it if so. I screwed on a 95mm metal dewshield and added a old Celestron C-5 counterweight kit to the the front. Now it balances perfectly with one small counterweight. I'm gearing up to take some Moon shots tonight. Here are a few pictures of what I'm talking about.