Joist hangers at wrong height

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Worcesterman

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Hi
I’ve nailed a few jiffy hangers at the wrong height onto a header. I need them about 1.5 inches higher. I am putting some stronger ceiling joists in my old attic. (Nothing is level or straight). My issue is that if I take the nails out and nail again at the correct height I feel like the header is getting peppered with too many nail holes and the new holes end up too close to existing holes. I can’t move the hangers laterally at all. Maybe I’ll think of an answer but I wondered if there were any simple solutions.
 
Can you post a pic of the hangers in position?

Blup
 
upload_2021-11-20_0-17-9.jpeg
 
I can’t get a photo right now. Similar to above but with joists hung lower than header. Header beam is 2 ply 9x2 beam bolted together and runs perpendicular to and above old ceiling joists. Joists are 7x2 and hung about 3 inches lower than header to run between and parallel to old ceiling joists just above the ceiling lath. They rest at the other end on top plate of an exterior wall and I’d gauged their level as they ran across an internal stud wall near where they join the header beam. But the top of the internal stud wall is not level with the exterior wall so the joists are not level. If I raise the hangers and keep them in line then the new nail holes will almost hit the old ones above as it were. If I raise the hangers and move them each laterally a bit so as to get some clear timber to nail into then the joists won’t line up next to the roof rafters which I am securing them to where they site on the exterior wall.
I did cut a small spacer piece of timber 2’’x1.5’’x 3’’ to sit in the base of the hangers and for the joist to sit on top of. It seemed quick and felt secure but never seen it done.
 
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Packing the hangers will raise the strap where it folds over the top of the bearer joist. I don’t know what the layout is but you could consider the following: rip an appropriate length of C24 timber to 1.5 inches and fix it to the top of the bearer. This gives it a new base for the load bearing part of the hanger to sit on. Treat the ripped edge first. The vertical part of the bearer is for location unless you have really mashed it up.

Blup
 
This seemed to work ok and didn’t mean taking all the nails out to raise the hanger.
 
I'd never get away with that on site - either the S/E would pull it or the BCO would. It's because there is insufficient connection between the hanger and the joist, I've been told. Why not just pry the hangers off gently and position them correctly? You also need to fill every hole with a twist nail, including the holes at the sides of the joist (I see 7 missing there alone)
 
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