I've been checking the forums here a while and have learned a lot, thanks to all...
I thought I would offer some thoughts on a couple of MyPressi issues brought up here that I have some experience with:
1. Leaking water during pre-heat... Water all over the countertop has been my single biggest annoyance with the Twist, and I think I know what the problem is. While errant coffee bits under the little flapper valve will certainly cause leakage, I think that the material itself may be contributing. I've gone through several, and in each case I see a roughness that cannot be washed away has developed on the sealing surface of the valve. Like tiny pips or blisters. How well the valve seats sort of comes and goes. The latest they've sent me seals well... now and then. I'm living with it.
2. Difficulty screwing the cartridge cap all the way in... Happens sometimes, and, yes, it blows that cartridge. One of my previous Twists was so bad that the sealing o-ring in the handle was actually shredded. I've reduced that occurrence by moistening the cart nozzle, sometimes with a touch of olive oil, sometimes just spit, and inserting the cart vertically, held in the cap, and giving everything a little shake to insure alignment as the nozzle starts through the o-ring.
I've experienced the same problems described here by others, including spontaneous, violent discharge of the gas cart while the unit was just sitting on the counter on its own. Pretty startling!
I'm on my 4th MyPressi, and this one's working well. Some will read that as an indictment, but let me finish by saying that the customer service from MyPressi has been second to none... they've been fantastic, working with me promptly and with great patience. Yes, there are some bugs remaining for their R&D to work out, but I think they might just nail it down... I hope so.
"Experience starts when you begin" - Pete Culler