|Several posters have bemoaned the longevity of this critical part of an otherwise reputable firearm. Running the pistol hard (ie. instructional type shooting of +P,+P+ type ammo), how frequently should this part be replaced? Will the use of stronger springs extend the life of the locking block? I have an opportunity to pick up a bone stock 92 with about (give or take) 1500 rds through + a grip of WhiteBox for a steal, but the weapon has been fed an exclusive diet of +P (mainly 115 gr. Silvertip). Should I purchase the pistol, would a new locking block, and springs be in order?