Hi, I looked around for a bunch but I couldn't find the answer to some newbie questions...

What is the difference between MHS v1 and MHS v2? Are they the same Outer Diameter? Do they have different threads?

And is the MHS Builder up to date? I was able to get it working (had to use Chrome) but I couldn't tell if it was pulling current products available or old ones... and I also couldn't tell if it was using only MHSv1, MHSv2, or mixing them...