My Hog D1 with Yoke adater came in yesterday and since this is my first DIN regulator I have a few observations / questions. 1) With a Yoke reg I'm used to inspecting the filter before putting it on the tank. With the DIN I can barely see the filter. This is clearly by design so I wonder what I should do as part of my predive inspection. 2) With Yoke the o-ring is on the tank. Whats the best (gentlest) way to assemble this? Do I put the adapter on the tank first then screw the DIN on? Should I just leave the adapter on the reg? It came with a DIN cover ( with the string attached to the adapter even though it won't fit inside the adapter ). Basically I'm looking for the best procedure to protect the reg ( water intrusion and o-ring ).