I'll point out something, here.
The intentional removal of a factory supplied, factory installed safety device can result in a heavy lawsuit, should something untoward happen.
If it's proven that 'you' removed the safety - then 'you' as the ultimately resposible party, in today's litigious society.
You might want to just disassemble and polish all the high points and areas of wear - and carefully de-burr anything that you can see - then reassemble after using a good lubricant.
It works just as well, if you take your time with the job.
Good Luck!
Vaya,
Scouts Out!