Leaving mags loaded doesn't make them softer. Shaving down the follower really helps though. With the stock mags, it is very hard to load 10 rds on a closed slide. Sand down the follower and there are no problems at all.
Modify the mags if needed. Mine wouldn't get round ten in without shaving off a bit of the follower.
After that just shoot it. You may not need to modify anything.
or get 10/17 mags.




















































