I should have started this topic before I removed the cosmoline.... in hard/messy way. Now, spouse and kids are complaining the smell in basement

although I did not smell anything special.
The only part that still has cosmoline inside and could cause trouble is the bolt. I tried to disassemble it but the pin is so tight and I gave up. The firing pin does not move back and forth freely. That's dangerous for SKS and could cause firing outside of the chamber or slam firing, etc. I tried heat gun, and the pin moves free when temperature is high, but it returns to "sticky" mode after the bolt cools down.
This problem must be resolved before I can carry it to the range.