Some history first, my son was in Jackson's for past 2 seasons, both seasons having issues with the arch area. We tried re-heat molding, bumping out the arch, etc.. His last pair we ended up noticing 3/4 of the season in that the blade when he skated wasn't 'straight' on the ice. He could not skate in a straight line on 1 foot on his left without a lot of difficulty. We tried superfeet and then moved his blade positioning out. Was a bit better but still not right.
We just moved to Ridell's for him (1st day on them will be tomorrow). We did go somewhere different for the skates/blades this time (where we had been before but not year after year due to distance). During the blade mounting, they put in the temporary mount, had him walk around the store and moved his right blade out a little bit and his left blade quite a bit out from the normal mounting position. Turns out he walks more on the outside of his feet and his runners show that wear pattern. So basically, the 'pressure point' of where the blade was mounted caused his arch pain due to foot positioning. We'll know absolutely after tomorrow when he tries them out.
So you may want to take a look to see if that could be the issue -it might not be.. but worth double checking.