hello !! , this my first barrel smoker build i found 2 barrels knowing i have to remove the inside paint. thoiught its gone be easy but this paint love this barrels its not going out with paint removal and i cannot burn it (neigbours). this paint is not look like red liner and i think its rust inhibitor. do i have to remove it ? and how? i dont have access to send blast and cannot burn it, attached some pictures of the proccess.