At first blush, I think you should be all right. The factors in your favor are
First; the bolt pattern is symmetric and you used identical bolt/nuts/washers at all locations so you should effectively only altered the balance a minimal amount
Second; the bolts are near the center (axis of rotation) so any variation in mass should have a small effect on the moment of inertia (proportional to m*r^2) and therefore the performance
Finally; you used grade 8 hardware with self locking nuts. The grade 8 will have higher shear (& tensile) strength than the original rivets plus the locking nuts will provide reasonable assurance that they will stay tight.
Keep us posted on how it looks in the first few thousand miles.
Good luck.
First; the bolt pattern is symmetric and you used identical bolt/nuts/washers at all locations so you should effectively only altered the balance a minimal amount
Second; the bolts are near the center (axis of rotation) so any variation in mass should have a small effect on the moment of inertia (proportional to m*r^2) and therefore the performance
Finally; you used grade 8 hardware with self locking nuts. The grade 8 will have higher shear (& tensile) strength than the original rivets plus the locking nuts will provide reasonable assurance that they will stay tight.
Keep us posted on how it looks in the first few thousand miles.
Good luck.