Yeah, my 2001 H535 fret issues are varied. I can set the truss rod to get the fretboard straight using a notched straight edge. However, at that setting, the frets are not leveled properly nor does the relief match the tops of the frets. Or set the truss rod to make the relief measured at the fret tops more correct, which makes the fretboard wonky.
The other issue is the frets are rolled off too far from the treble edge, especially frets 1 - 5.
I don't know if it was bad factory work or someone did a bad job on it before I owned it. 2001 was kind of a weird time at Heritage. Some real gems from that era, but seems like consistency was off.
I did a bit of leveling and crowning and it is better. Not completely happy with it though. Planning on a full refret with Dunlop 6100, bit wider and a fair bit taller fret. That's what's on my H150 and it plays like butter.
Going to do a full refret, lose the nibs, and pay attention to properly level the fretboard first before installing the new frets.
Guitar sounds great, looks great, but I don't think it lives up to its potential without fretwork.