
OC Ti 22 not coming clean - help
Help! First time cleaning my OCL Ti 22. This gunk remains after 24 hours in Breakthrough, 12 hours in simple green and brass wire brushing after each soaking.
Can I take a pick to it or is whatever fine scratching it may leave a bad thing?
Do ultrasonic cleaners remove this hardened carbon and lead more than the soaking and brushing?