The lockout chip won't cause the game not to come on at all. It only solves that occasional problem of the game starting normally but then reseting over and over.
It doesn't surprise me that bending the connectors wouldn't work. Once you start bending the connectors it's hard to have them line up exactly at the same angle where they all would make good solid contact with the cartridge pins.
I'd recommend getting a new 72 pin connector you can get one on ebay in $7-8 USD range. Even if it doesn't fix your problem you'd still have it for your next NES.
What you can try doing as a last ditch effort to save that old 72 connector is take a piece of sandpaper fold it over something like a credit card and insert it in and out of the connector. (not side to side) If there's something like a bit of rust or corrosion that's causing a connectivity issue that will make short work of it.
This is not necessarily true.... In bad cases a lockout pin can indirectly cause blue screens.... I have had many, many blue screens fixed at work by only disabling the the chip sometimes.... Not all times, but sometimes.... That's why I always do a new 72 pin at the same time these days because that seems to take care of 95% of our NES systems without other work.... It's just faster in the long run for us and customers appreciate the brand new pin set in ever NES we sell....