Learn how to totally disassemble and reassemble it. The only tools you will need will be a screwdriver for the grip screws and an expired credit card to depress the little plunger when you reinstall the thumb safety.
Buy yourself a copy of
The Kuhnhausen Book, or
download it for free.
Clean and lube your 1911 with generous amounts of
Ballistol. The 1911 runs best when it's dripping with oil.
SA 1911's are reliable and very strong. The 9mm barrel is hugely overbuilt, having the same O.D. as the 45. Frankly, the 9mm is such a puny round that you could load the case totally full of
Power Pistol and hammer the bullet in on top of it without developing a round that will hurt anything bigger than a possum, or blow up the gun.