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Hey Astro,
you're spot on about having to use a table and having to move the scope to get a comfortable viewing angle. As I said earlier, this is no problem for me at home as I have a small round table that my wife bought for use on our smallish balconies, I also have a stool that's good to sit it on. But it's a bit awkward when at another sight. I've heard of people using what they call "short camping stool" to sit on and have the scope on the floor. I'm only 5'10" tall and would find this uncomfortable after about five seconds. I'm going to make a table/stool for mine based on my cats scratching pole with a wide base and top.
The helical focusser is bad but I haven't used anything else yet so it seems OK to me. I can only think they made that one for it's light weight which would be why it doesn't accept 2" EPs as well. It has around 30mm travel on single thread from memory but has come nowhere near to totally unscrewing.
As for the single spider arm I can detect no type of aberrations caused by it. The only time I have seen any noticeable spikes was when the secondary mirror it holds it was knocked out of collimation.
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