Ak rear sight base canting

[Rust]

So I've been slowly finishing up the metal work on my rifle from Woody's build party. Many many thanks to all of you guys who gave so much help to me and the other builders! I've noticed that my kit has a canted rear sight base. I've seen a ton of threads and how to articles on correcting front sight or gas block cant, but not the rear. Mine is leaning noticeably to the right (looking from the receiver forward) now that everything is all put together. Does any one have any advice from past experience with correcting this?
My current line of thought is to drive the pin out, push the block forward out of the front trunnion, relieve the trunnion ears on the left side, open the pin channel up to allow it to rotate a couple of degrees to the left, tap the right side trunnion ear back over to secure the base again, and redrill to a slightly larger size pin it.
I've seen other suggestions about doing the front with a hammer or a vise and just twisting it, but that seems like a BS way of doing it, and my damage the thing walls of the piston channel. Any advice?

[motorhead]

is the entire barrel canted? the bbl. pin can be pressed in with the bbl. slightly canted. it doesn't magically straighten up. maybe just reinstall the barrel straight.

[Rust]

No, the front sight and gas block both look pretty darn close to being true. I have not had a chance to come up with a jig and parallels to check them yet. But the calibrated eyeball and the fit of the gas piston says the two of them are in the right place, and the gap under the left side of the rear sight says it's crooked. I suppose its possible we got it back in there wrong, and that the front sight and the gas block both were wrong before. But both Freddieusa and I were pretty careful when we put the barrel pin back in to check from both sides to make sure it was aligned where it had been. Either way, I think it would probably be easier to adjust the one problem I have now rather than redo the entire front end.

[motorhead]

could be problematic trying to fix in place. the RSB is a press fit. it's also easily damaged/trashed. won't hurt to remove the pin and TRY to move it, just know when to stop.

[joelukehart]

Are you sure its not the front sight that's canted? FSB cant is a common problem with even factory AK's

[Rust]

Thanks for the info motorhead, I hadn't been considering that the rear sights could be a press fit like the trunnions are. I really don't want to have to press the barrel back out to work on it, but when the rifle was originally built the ears on the top of the front trunnion were peened in after the sight base was installed. I would try to grab the thicker square portion of the base and twist it in place and redrill, but I think those ears will keep it from rotating. Maybe I'll get lucky and a liberal application of Kroil and a little gentle persuasion will get it forward so I can open the ears up.