RV-9A Flap Bucking Bar ?

I have the top skin riveted on the flaps and am getting ready to rivet the bottom skin to the spar. This a confined area with almost no visibility. None of my bucking bars are the right shape. Has anyone found a particular bucking bar that works good in this area?

Thanks
Jim Wright 90919 RV-9A wings- (About to order the fuselage kit)

I am not sure if this will help as I myself are not quite as far along as you are, but I know in the Orndorff videos they have the same issue and recommend using this bar

http://www.averytools.com/onlinecatalogs.htm Part # : 615

Hope it helps,

I used the tail of my 4" squeezer yoke for most of them. Yeah, those rivets are a pain.

I think I countersunk a bit deep so all my rivets were a loose fit and a pain to drive. I found the best bucking bar was a bag of MK319BS rivets (and a few MK320s for the rib attachments...).

Dave

I don't know why they didn't just go ahead and use MK319's anyway. You can't see that area normally and they would probably hold better than a less than perfect driven rivet. I have the Orndorf videos so I guess I better go brush up a little. Thanks for reminding me about the video.
Thanks Guys,
Jim