Steering box keeps loosening up

[psoucy]

I have a1970 K10 with new steering gear box, rag joint, column and the steering gear box keeps loosening up. I’ve torqued 3 times, same result. Last time I used red locktite. Anybody had this issue, if you have how did you correct. Been driving it to work, about 45 miles each way and by the time I get home I’m all over the road. I have 18”x35” tires with 2” of lift so I know that’s a contributing factor but I need to correct to be able to drive. Frames not cracked or anything like that.