(I must not be very bright as I do not know how to delete this empty thread????)
Do I need o rings?
You can easely and shipelly buy those rings from a hardware shop, mine are size 11 ( 13.6x19x2.7mm) super snog!! I did find it hard to place the ring dead on in the middle below the solo cap but then I tried with a straight stem in with the ring around and screwed it all together (if this make sense) and once the stem out the ring was left trapped dead on center!!!
Mouthpieces getting too hot
No fear to get your stem hot, it stays super cool, just dont be stupid like me as you take it away from your solo and hold it by the wrong end, ouch it burns, durrrrrr
I have not tried my solo with a bubbler yet but I use my EQ with a bong ALL the time, even when using the balloon, to me it just is so much smoother but mainly the next day my throat is not irretated!!
As regrads to the price of water devices, well, check this thread and you'll be amazed at what out there for people on a budget
http://fuckcombustion.com/threads/cheap-high-quality-bubbler.5255/
As i have notice other people mentionning the place where they bought their solo and did not get told of for it.
Iits my turn:
I bought my SOLO from this super, friendly, helpfull, responsive and most of all with very competitive prices called PUFFITUP,
http://www.puffitup.com/category-s/61.htm
Bottom line, a service next to none