Originally Posted by Wallowa
If you are going to ride your bike on road and not in loose stuff off road the angled stem seems to make sense..but just for me a 90 degree stem doesn't work for my off road riding..it is too vulnerable to getting ripped since it is oriented 90 degrees to direction of rotation...I try to reduce all "what ifs" that could cause a component failure....can't ever make it bullet proof but often a little thought can give you an edge..
Putting air in or gauging pressure is more about technique that angle of stem...just my thoughts.
Did you soap test the stem to see if it is leaking? Most often it is the stem valve and not the stem..
Good advice. Also, make sure you're fitting the correct stem cap with o-ring.