That reminds me of a similar thing. A friend told me about and described something like maybe a few large ball bearings like you say to straighten out dented intake runners on gm tuned port.
I feel really dumb for asking this but what is a mandrel exhaust shop?
Just an old regular exhaust shop with a tubing bender? Or is it a special machine? Just trying to understand lol
I tapped it on a bit but it's pretty far off from even starting threads and theres not allot of swing space. Came off Harder than I expected but was as smooth as could be expected so I figured it's just tight.
The tool that was ordered also skips over the size I need. At the hardware store I can buy the correct size nut but not the bolt. Pretty discouraged about it. I ordered a bolt that is much longer but it's on a slow boat from China lol and I don't think I want to wait that long. Might get froggy...