Lower intake manifold
 

Hello all, i have a question on the lower intake manifold, i could not find a thread on this, so here goes...
I took the upper intake off to swap out the gaskets due to a p420 code and found that two of the press fittings on the lower intake manifold are stripped out and do not get tight.
They are stripped from the intake not on the inside threads, i have tried jb weld, snd several different high temp epoxies and nothing seems to work.
I was wondering if anyone else had this issue and how it was repaired, short of buying the whole lower intake?
I have attached a picture, the two circled are my issue, as you can see one is removed, the other is still there and just spins.
Any suggestions?

update:
found an old thread and good advice from thermo
Here:
https://www.jaguarforums.com/forum/x...x-type-134222/
https://cimg3.ibsrv.net/gimg/www.jag...6a80454f1b.png

I used JB Weld, it worked fine (don't use Quick JB).
Make sure upper intake bracket is aligned right, otherwise it can pull out brass nuts.
In my car lower intake o-ring were bad, upper ones were fine.
Code P0420 is a code for cat. converter or downstream o2 sensor, it has nothing to do with gaskets.
Get o2 sensor 30mm extension (tube) from ebay

Yes
 

The p420 is a cat code,
But it has to do with a vacuum leak & can trigger a false p0420 for a bad reading on the 02
The 02's are all brand new denso's, the cats and exhaust are fairly new , i guess i should have given a bit more details and how i arrived at the current issue.
I had a leak in the line from the break booster also, the fitting on top of the intake was hissing, so i started leak testing and got bad results there and the front right of the intake, upon further inspection i could see the old gaskets, so i removed it and found the brass fittings broken loose, and here we are
Heli coil is my next attempt.
Thanks for the reply

Wow! Really, makes you wonder if someone overcooked the engine at some point?

Soooo
 

Could not find heli coils the size needed or even close, ran out of options and then The good Dr dome saved my ass, i got his number on the forum and texted him, he had the intake, met him the next day !
Very great part, better price
Thank you sir ! Cheers!

Thanks to all who gave input.

*head smack* DUH!! Yeah, he's great.