[kimeccles]

I have a new Brassworks radiator 10 fin 1930-1 that my original cap goes in but then only turns a tiny bit and won't stay on.

I bought this at a local auto store who now is out of business and can't take it back. It has never been used other than to install it.

I was going to try to grind or file it some so the cap would fit, but was advised to leave it alone for a possible return.

So now my question is, do any of you have their 6 fin unit that is more like the original and is the 6 fin version also good for cooling and more "original" point wise for judging? Any problems with the caps fitting on the 6 fin version lately?

Thanks