When I mentioned this to Pettifogger, he said he hadn't seen it. Said he doesn't check this forum. He may see it here eventually but if you post this in the Gunsmithing forum I'm sure he will see it. He is retired as far as gunsmithing so he won't be able to fix yours but can very likely offer you ideas as to what may need to be done.
If you do need to send it off, my highest recommendation would be Lassiter. I found this contact info from 2014, but I think it is still current:
Tom's Single Action Shop New Lebanon OH Tom Wildenauer
I got my Lightning back from midwest gunworks and they broke it.... but swore they shot an entire box of rounds through it. Thanks for the information about TOM and Toms single action . Really nice guy and i spoke with him at length about lightning rifles....sent it off to him a few weeks ago.