Hahaha....sorry....when I first started locksmithing I must've heard a thousand different ways of pronouncing Schlage. I haven't visited there in quite awhile, but at one time they used to have a female pronouncing it properly on their website.
Check out:
www.schlage.com
and poke around it might be in there. I usually say it the right way, but I have no idea how to type it out here so it makes sense.
Generally, Schlage locks require light tension depending on the quality/grade and age of the lock.
As always, I first recommend that you flush the lock with a good silicon/teflon lubricant to remove any debris in the lock.
Schlage locks in general have tighter plug to shell tolerances than cheaper brands such as Weiser, Kwikset, and Taymor.
Try light tension and single-pin picking. Take time to develop your sense of touch and listen/feel for the pin movement. If this is a commercial grade lock your working on, you may need to use slightly heavier tension as the locks work on a clutch, rather than the standard spring latches.
Another tip would be to try picking the lock in the opposite direction and then use a plug spinner to move it to the unlock position. Many have success with this method.
Good luck, and don't forget to post with your results.